diff --git a/src-tauri/src/cmd/connection.rs b/src-tauri/src/cmd/connection.rs
index db1a5380..3a8ec72e 100644
--- a/src-tauri/src/cmd/connection.rs
+++ b/src-tauri/src/cmd/connection.rs
@@ -297,6 +297,7 @@ mod tests {
                 username: "root".to_string(),
                 backspace_mode: "del".to_string(),
                 x11_forwarding: false,
+                encoding: String::new(),
             },
             group_id: None,
             description: None,
@@ -335,6 +336,7 @@ mod tests {
                 send_naws: true,
                 send_sga: true,
                 auto_login: Default::default(),
+                encoding: String::new(),
             },
             group_id: None,
             description: None,
@@ -364,6 +366,7 @@ mod tests {
                 shell_args: String::new(),
                 working_dir: None,
                 ai_execution_profile: AiExecutionProfile::Auto,
+                encoding: String::new(),
             },
             group_id: None,
             description: None,
diff --git a/src-tauri/src/cmd/session.rs b/src-tauri/src/cmd/session.rs
index 5f39d563..0ce17cd8 100644
--- a/src-tauri/src/cmd/session.rs
+++ b/src-tauri/src/cmd/session.rs
@@ -76,7 +76,10 @@ pub async fn create_temporary_ssh_session(
     config: ssh::SshConfig,
     create_request_id: Option<String>,
 ) -> AppResult<String> {
-    let ssh_config = normalize_temporary_ssh_config(config);
+    let encoding = crate::config::load_app_settings(&app)
+        .map(|settings| settings.interaction.default_encoding)
+        .unwrap_or_else(|_| "UTF-8".to_string());
+    let ssh_config = normalize_temporary_ssh_config(config, &encoding);
     let pending_creation = state.begin_session_creation(create_request_id).await;
     let (guard, cancel_rx) = match pending_creation {
         Some((guard, cancel_rx)) => (Some(guard), Some(cancel_rx)),
@@ -104,7 +107,7 @@ pub async fn create_temporary_ssh_session(
     Ok(session_id)
 }
 
-fn normalize_temporary_ssh_config(mut config: ssh::SshConfig) -> ssh::SshConfig {
+fn normalize_temporary_ssh_config(mut config: ssh::SshConfig, encoding: &str) -> ssh::SshConfig {
     config.connection_id = None;
     config.owner_window_label = None;
     config.backspace_mode = if config.backspace_mode.trim().is_empty() {
@@ -118,6 +121,10 @@ fn normalize_temporary_ssh_config(mut config: ssh::SshConfig) -> ssh::SshConfig
     config.proxy_jump = None;
     config.post_login = None;
     config.ssh_algorithms = None;
+    // Inherit encoding from global settings if not explicitly set.
+    if config.encoding.trim().is_empty() || config.encoding == "UTF-8" {
+        config.encoding = encoding.to_string();
+    }
     config
 }
 
@@ -165,6 +172,7 @@ pub async fn create_local_session(
     };
     let config = if let Some(ref cid) = connection_id {
         let conn = config::load_connection_by_id(&app, cid)?;
+        let encoding = config::resolve_connection_encoding(&app, &conn);
         match conn.config {
             config::ConnectionType::LocalTerminal {
                 shell_path,
@@ -176,6 +184,7 @@ pub async fn create_local_session(
                 shell_args,
                 working_dir,
                 name: conn.name,
+                encoding,
             }),
             _ => None,
         }
@@ -226,6 +235,7 @@ pub async fn create_telnet_session(
     let cfg = if let Some(ref cid) = connection_id {
         let conn = config::load_connection_by_id(&app, cid)?;
         let telnet_password = resolve_telnet_connection_password(&app, conn.auth.as_ref())?;
+        let encoding = config::resolve_connection_encoding(&app, &conn);
         match conn.config {
             config::ConnectionType::Telnet {
                 host: ref ch,
@@ -256,6 +266,7 @@ pub async fn create_telnet_session(
                 send_naws,
                 send_sga,
                 auto_login: core::TelnetAutoLoginConfig::from(auto_login),
+                encoding,
             },
             _ => {
                 return Err(AppError::Config(
@@ -352,6 +363,7 @@ pub async fn create_serial_session(
     };
     let cfg = if let Some(ref cid) = connection_id {
         let conn = config::load_connection_by_id(&app, cid)?;
+        let encoding = config::resolve_connection_encoding(&app, &conn);
         match conn.config {
             config::ConnectionType::Serial {
                 port_name,
@@ -369,6 +381,7 @@ pub async fn create_serial_session(
                 stop_bits,
                 name: conn.name,
                 backspace_mode,
+                encoding,
             },
             _ => {
                 return Err(AppError::Config(
@@ -377,6 +390,9 @@ pub async fn create_serial_session(
             }
         }
     } else {
+        let encoding = crate::config::load_app_settings(&app)
+            .map(|s| s.interaction.default_encoding)
+            .unwrap_or_else(|_| "UTF-8".to_string());
         core::SerialConfig {
             port_name: port_name
                 .ok_or_else(|| AppError::Config("port_name is required".to_string()))?,
@@ -386,6 +402,7 @@ pub async fn create_serial_session(
             stop_bits: stop_bits.unwrap_or_else(|| "1".to_string()),
             name: name.unwrap_or_else(|| "Serial".to_string()),
             backspace_mode: "ctrl_h".to_string(),
+            encoding,
         }
     };
     let marked_connection_id = connection_id.clone();
@@ -578,7 +595,7 @@ mod tests {
         }))
         .expect("temporary ssh config");
 
-        let normalized = normalize_temporary_ssh_config(config);
+        let normalized = normalize_temporary_ssh_config(config, "UTF-8");
 
         assert!(normalized.connection_id.is_none());
         assert!(normalized.owner_window_label.is_none());
diff --git a/src-tauri/src/config/connection.rs b/src-tauri/src/config/connection.rs
index 5c81fc62..24f0dc44 100644
--- a/src-tauri/src/config/connection.rs
+++ b/src-tauri/src/config/connection.rs
@@ -89,6 +89,8 @@ pub enum ConnectionType {
         backspace_mode: String,
         #[serde(default, skip_serializing_if = "is_false")]
         x11_forwarding: bool,
+        #[serde(default)]
+        encoding: String,
     },
     LocalTerminal {
         #[serde(default)]
@@ -99,6 +101,8 @@ pub enum ConnectionType {
         working_dir: Option<String>,
         #[serde(default, skip_serializing_if = "is_ai_execution_profile_auto")]
         ai_execution_profile: AiExecutionProfile,
+        #[serde(default)]
+        encoding: String,
     },
     Telnet {
         host: String,
@@ -129,6 +133,8 @@ pub enum ConnectionType {
         send_sga: bool,
         #[serde(default, skip_serializing_if = "is_default_telnet_auto_login")]
         auto_login: TelnetAutoLoginConfig,
+        #[serde(default)]
+        encoding: String,
     },
     Serial {
         port_name: String,
@@ -144,6 +150,8 @@ pub enum ConnectionType {
         ai_execution_profile: AiExecutionProfile,
         #[serde(default = "default_backspace_mode_serial")]
         backspace_mode: String,
+        #[serde(default)]
+        encoding: String,
     },
 }
 
@@ -466,6 +474,23 @@ fn migrate_connection_proxies_to_standalone(
     Ok(())
 }
 
+/// Returns the effective encoding for a connection: per-connection override if set,
+/// otherwise the global default from `interaction.default_encoding`.
+pub fn resolve_connection_encoding(app: &AppHandle, conn: &SavedConnection) -> String {
+    let per_conn = match &conn.config {
+        ConnectionType::Ssh { encoding, .. }
+        | ConnectionType::LocalTerminal { encoding, .. }
+        | ConnectionType::Telnet { encoding, .. }
+        | ConnectionType::Serial { encoding, .. } => encoding.as_str(),
+    };
+    if !per_conn.is_empty() {
+        return per_conn.to_string();
+    }
+    crate::config::load_app_settings(app)
+        .map(|s| s.interaction.default_encoding)
+        .unwrap_or_else(|_| "UTF-8".to_string())
+}
+
 /// Loads a single connection by ID.
 ///
 /// Returns `AppError::SessionNotFound` if no connection with that ID exists.
diff --git a/src-tauri/src/config/mod.rs b/src-tauri/src/config/mod.rs
index a1b16962..fed12ed1 100644
--- a/src-tauri/src/config/mod.rs
+++ b/src-tauri/src/config/mod.rs
@@ -28,7 +28,7 @@ pub use connection::{
     AiExecutionProfile, AppConfig, ConnectionAuth, ConnectionNetwork, ConnectionType, Group,
     SavedConnection, SessionsConfig, SftpCwdFollowMode, SftpSettings, SshAlgorithmMode,
     SshAlgorithmPreferences, TelnetAutoLoginConfig, load_config, load_connection_by_id,
-    load_sessions, save_config, save_sessions,
+    load_sessions, resolve_connection_encoding, save_config, save_sessions,
 };
 #[allow(unused_imports)]
 pub use credential::{
diff --git a/src-tauri/src/core/importer/electerm.rs b/src-tauri/src/core/importer/electerm.rs
index c14e4e1b..e5b891d5 100644
--- a/src-tauri/src/core/importer/electerm.rs
+++ b/src-tauri/src/core/importer/electerm.rs
@@ -144,6 +144,7 @@ fn prepare_electerm_bookmark(
             username,
             backspace_mode: "del".to_string(),
             x11_forwarding: false,
+            encoding: String::new(),
         },
         group_path,
         description: None,
diff --git a/src-tauri/src/core/importer/merge.rs b/src-tauri/src/core/importer/merge.rs
index 4ca524dc..453a534f 100644
--- a/src-tauri/src/core/importer/merge.rs
+++ b/src-tauri/src/core/importer/merge.rs
@@ -92,6 +92,7 @@ fn import_legacy_sessions(
                 username: sess.username,
                 backspace_mode: "del".to_string(),
                 x11_forwarding: false,
+                encoding: String::new(),
             },
             group_id,
             description: sess.description,
diff --git a/src-tauri/src/core/importer/nyaterm_json.rs b/src-tauri/src/core/importer/nyaterm_json.rs
index 7e3cbb69..a204fb02 100644
--- a/src-tauri/src/core/importer/nyaterm_json.rs
+++ b/src-tauri/src/core/importer/nyaterm_json.rs
@@ -119,6 +119,7 @@ fn prepare_nyaterm_json_session(
                     username: required_string(username, "username", &context)?,
                     backspace_mode: "del".to_string(),
                     x11_forwarding: false,
+                    encoding: String::new(),
                 },
                 group_path: normalize_optional_group_path(group_path, &context)?,
                 description: normalize_optional_string(description),
@@ -150,6 +151,7 @@ fn prepare_nyaterm_json_session(
                     shell_args,
                     working_dir: normalize_optional_string(working_dir),
                     ai_execution_profile: AiExecutionProfile::Auto,
+                    encoding: String::new(),
                 },
                 group_path: normalize_optional_group_path(group_path, &context)?,
                 description: normalize_optional_string(description),
@@ -187,6 +189,7 @@ fn prepare_nyaterm_json_session(
                     send_naws: true,
                     send_sga: true,
                     auto_login: Default::default(),
+                    encoding: String::new(),
                 },
                 group_path: normalize_optional_group_path(group_path, &context)?,
                 description: normalize_optional_string(description),
@@ -220,6 +223,7 @@ fn prepare_nyaterm_json_session(
                     stop_bits,
                     ai_execution_profile: AiExecutionProfile::Auto,
                     backspace_mode,
+                    encoding: String::new(),
                 },
                 group_path: normalize_optional_group_path(group_path, &context)?,
                 description: normalize_optional_string(description),
diff --git a/src-tauri/src/core/importer/termius.rs b/src-tauri/src/core/importer/termius.rs
index f495415e..d53b9036 100644
--- a/src-tauri/src/core/importer/termius.rs
+++ b/src-tauri/src/core/importer/termius.rs
@@ -1071,6 +1071,7 @@ fn prepare_termius_connections(
                 username,
                 backspace_mode: "del".to_string(),
                 x11_forwarding: false,
+                encoding: String::new(),
             },
             group_path,
             description: Some("Imported from Termius".to_string()),
diff --git a/src-tauri/src/core/sftp/mod.rs b/src-tauri/src/core/sftp/mod.rs
index 55415188..d219195f 100644
--- a/src-tauri/src/core/sftp/mod.rs
+++ b/src-tauri/src/core/sftp/mod.rs
@@ -54,6 +54,7 @@ pub(crate) struct AutoRemoteFs {
     inner: RwLock<Option<Box<dyn RemoteFs>>>,
     ssh_handle: Arc<SshConnectionHandles>,
     cache_key: String,
+    encoding: String,
 }
 
 impl AutoRemoteFs {
@@ -62,11 +63,13 @@ impl AutoRemoteFs {
         host: &str,
         port: u16,
         username: &str,
+        encoding: &str,
     ) -> Self {
         Self {
             inner: RwLock::new(None),
             ssh_handle,
             cache_key: cache_key(host, port, username),
+            encoding: encoding.to_string(),
         }
     }
 
@@ -108,7 +111,7 @@ impl AutoRemoteFs {
         match SftpBackend::probe(&self.ssh_handle).await {
             Ok(()) => {
                 save_cached_backend(&self.cache_key, "sftp", false, None);
-                return Ok(Box::new(SftpBackend::new(self.ssh_handle.clone())));
+                return Ok(Box::new(SftpBackend::new(self.ssh_handle.clone(), &self.encoding)));
             }
             Err(e) => {
                 let reason = e.to_string();
@@ -152,7 +155,7 @@ impl AutoRemoteFs {
                     .await
                     .ok()
                     .map(|()| -> Box<dyn RemoteFs> {
-                        Box::new(SftpBackend::new(self.ssh_handle.clone()))
+                        Box::new(SftpBackend::new(self.ssh_handle.clone(), &self.encoding))
                     })
             }
             "scp_enhanced" => ScpEnhancedBackend::probe(&self.ssh_handle).await.ok().map(
@@ -184,7 +187,7 @@ impl AutoRemoteFs {
 async fn get_ssh_info(
     manager: &SessionManager,
     session_id: &str,
-) -> AppResult<(Arc<SshConnectionHandles>, String, u16, String)> {
+) -> AppResult<(Arc<SshConnectionHandles>, String, u16, String, String)> {
     let sessions = manager.sessions.lock().await;
     let session = sessions
         .get(session_id)
@@ -198,17 +201,17 @@ async fn get_ssh_info(
         .downcast::<SshConnectionHandles>()
         .map_err(|_| AppError::Config("Failed to get SSH handle".to_string()))?;
 
-    let (host, port, username) = if let Some(ref cfg_any) = session.ssh_config {
+    let (host, port, username, encoding) = if let Some(ref cfg_any) = session.ssh_config {
         if let Some(cfg) = cfg_any.downcast_ref::<crate::core::ssh::SshConfig>() {
-            (cfg.host.clone(), cfg.port, cfg.username.clone())
+            (cfg.host.clone(), cfg.port, cfg.username.clone(), cfg.encoding.clone())
         } else {
-            ("unknown".to_string(), 22, "unknown".to_string())
+            ("unknown".to_string(), 22, "unknown".to_string(), "UTF-8".to_string())
         }
     } else {
-        ("unknown".to_string(), 22, "unknown".to_string())
+        ("unknown".to_string(), 22, "unknown".to_string(), "UTF-8".to_string())
     };
 
-    Ok((ssh_handle, host, port, username))
+    Ok((ssh_handle, host, port, username, encoding))
 }
 
 async fn get_or_create_auto_fs(
@@ -230,8 +233,8 @@ async fn get_or_create_auto_fs(
         }
     }
 
-    let (ssh_handle, host, port, username) = get_ssh_info(manager, session_id).await?;
-    let auto_fs = Arc::new(AutoRemoteFs::new(ssh_handle, &host, port, &username));
+    let (ssh_handle, host, port, username, encoding) = get_ssh_info(manager, session_id).await?;
+    let auto_fs = Arc::new(AutoRemoteFs::new(ssh_handle, &host, port, &username, &encoding));
 
     {
         let mut sessions = manager.sessions.lock().await;
diff --git a/src-tauri/src/core/sftp/sftp_backend.rs b/src-tauri/src/core/sftp/sftp_backend.rs
index b149ea97..5a90409a 100644
--- a/src-tauri/src/core/sftp/sftp_backend.rs
+++ b/src-tauri/src/core/sftp/sftp_backend.rs
@@ -8,6 +8,7 @@ use super::util::*;
 use crate::core::ssh::SshConnectionHandles;
 use crate::error::{AppError, AppResult};
 use crate::observability::{StructuredLog, StructuredLogLevel, log_event};
+use encoding_rs;
 use russh::{ChannelMsg, ChannelOpenFailure};
 use russh_sftp::client::{Config as SftpClientConfig, SftpSession, error::Error as SftpError};
 use russh_sftp::protocol::{FileAttributes, FileType, StatusCode};
@@ -69,6 +70,7 @@ fn is_sftp_not_found(error: &SftpError) -> bool {
     )
 }
 
+#[allow(dead_code)]
 fn ignore_sftp_not_found(result: Result<(), SftpError>) -> AppResult<()> {
     match result {
         Ok(()) => Ok(()),
@@ -86,6 +88,7 @@ fn is_retryable_sftp_channel_open_error(error: &russh::Error) -> bool {
     )
 }
 
+#[allow(dead_code)]
 fn sftp_remove_error(path: &str, kind: &str, error: SftpError) -> Option<String> {
     if is_sftp_not_found(&error) {
         None
@@ -293,6 +296,11 @@ fn log_transfer_performance(
 pub(crate) struct SftpBackend {
     ssh_handle: Arc<SshConnectionHandles>,
     identity_cache: Arc<RwLock<RemoteIdentityCache>>,
+    /// Cache mapping decoded paths to their raw byte representations.
+    /// Used to preserve original encoding for non-UTF-8 file names.
+    path_cache: Arc<RwLock<HashMap<String, Vec<u8>>>>,
+    /// Encoding for this connection (e.g., "UTF-8", "GBK")
+    encoding: String,
 }
 
 #[derive(Default)]
@@ -310,10 +318,57 @@ struct ExecResult {
 }
 
 impl SftpBackend {
-    pub(crate) fn new(ssh_handle: Arc<SshConnectionHandles>) -> Self {
+    pub(crate) fn new(ssh_handle: Arc<SshConnectionHandles>, encoding: &str) -> Self {
         Self {
             ssh_handle,
             identity_cache: Arc::new(RwLock::new(RemoteIdentityCache::default())),
+            path_cache: Arc::new(RwLock::new(HashMap::new())),
+            encoding: encoding.to_string(),
+        }
+    }
+
+    /// Get the encoding setting for this connection
+    pub(crate) fn encoding(&self) -> &str {
+        &self.encoding
+    }
+
+    /// Convert UTF-8 path to raw bytes for SFTP operations.
+    /// Uses the connection's encoding setting.
+    fn encode_path_for_sftp(&self, path: &str) -> Vec<u8> {
+        if path.bytes().all(|b| b < 128) {
+            // ASCII-only path, use as-is
+            return path.as_bytes().to_vec();
+        }
+
+        // Path contains non-ASCII characters, encode using connection encoding
+        match self.encoding.to_uppercase().as_str() {
+            "GBK" | "GB2312" | "GB18030" => {
+                let (gbk_bytes, _, _) = encoding_rs::GBK.encode(path);
+                gbk_bytes.into_owned()
+            }
+            _ => {
+                // UTF-8 or unknown encoding, use UTF-8 bytes
+                path.as_bytes().to_vec()
+            }
+        }
+    }
+
+    /// Decode raw bytes to string using the connection's encoding.
+    fn decode_path_from_sftp(&self, bytes: &[u8]) -> String {
+        match self.encoding.to_uppercase().as_str() {
+            "GBK" | "GB2312" | "GB18030" => {
+                let (decoded, _, had_errors) = encoding_rs::GBK.decode(bytes);
+                if had_errors {
+                    // Fallback to UTF-8 lossy if GBK decoding fails
+                    String::from_utf8_lossy(bytes).into_owned()
+                } else {
+                    decoded.into_owned()
+                }
+            }
+            _ => {
+                // UTF-8 or unknown encoding
+                String::from_utf8_lossy(bytes).into_owned()
+            }
         }
     }
 
@@ -637,6 +692,7 @@ fn join_remote_child(parent: &str, name: &str) -> String {
     }
 }
 
+#[allow(dead_code)]
 fn is_safe_recursive_remove_target(path: &str) -> bool {
     let trimmed = path.trim();
     if trimmed.is_empty() || matches!(trimmed, "/" | "." | "..") {
@@ -979,6 +1035,7 @@ async fn download_known_size_to_local_file<F, G>(
     max_pipeline_depth: usize,
     controller: &Arc<TransferController>,
     parent_controller: Option<&Arc<TransferController>>,
+    path_cache: &RwLock<HashMap<String, Vec<u8>>>,
     mut on_bytes: F,
     mut on_progress_interval: G,
 ) -> AppResult<u64>
@@ -1008,12 +1065,23 @@ where
         .min(max_pipeline_depth.max(1))
         .min(num_chunks);
 
+    // Look up raw bytes path from cache for non-UTF-8 file names
+    let cache = path_cache.read().await;
+    let raw_path = cache.get(remote_path).cloned();
+    drop(cache);
+
     let mut handle_pool: Vec<russh_sftp::client::fs::File> = Vec::with_capacity(concurrency);
     for _ in 0..concurrency {
         handle_pool.push(
-            sftp.open(remote_path)
-                .await
-                .map_err(|e| AppError::Channel(format!("Failed to open remote file: {}", e)))?,
+            if let Some(ref bytes) = raw_path {
+                sftp.open_bytes(bytes.clone())
+                    .await
+                    .map_err(|e| AppError::Channel(format!("Failed to open remote file: {}", e)))?
+            } else {
+                sftp.open(remote_path)
+                    .await
+                    .map_err(|e| AppError::Channel(format!("Failed to open remote file: {}", e)))?
+            },
         );
     }
 
@@ -1167,6 +1235,7 @@ async fn download_remote_file_inner_with_controller(
                 pipeline_depth,
                 &controller,
                 parent_controller.as_ref(),
+                &backend.path_cache,
                 |current, _delta| {
                     controller.update_progress(current, total_size);
                 },
@@ -1181,11 +1250,21 @@ async fn download_remote_file_inner_with_controller(
             )
             .await?;
         } else {
+            // Look up raw bytes path from cache for non-UTF-8 file names
+            let cache = backend.path_cache.read().await;
+            let raw_path = cache.get(remote_path).cloned();
+            drop(cache);
+
             let mut last_progress = Instant::now();
-            let mut remote_file = sftp
-                .open(remote_path)
-                .await
-                .map_err(|e| AppError::Channel(format!("Failed to open remote file: {}", e)))?;
+            let mut remote_file = if let Some(ref bytes) = raw_path {
+                sftp.open_bytes(bytes.clone())
+                    .await
+                    .map_err(|e| AppError::Channel(format!("Failed to open remote file: {}", e)))?
+            } else {
+                sftp.open(remote_path)
+                    .await
+                    .map_err(|e| AppError::Channel(format!("Failed to open remote file: {}", e)))?
+            };
 
             let seq_chunk = (chunk_size as usize).max(64 * 1024);
             let mut buf = vec![0u8; seq_chunk];
@@ -1323,10 +1402,28 @@ async fn upload_local_file_inner_with_controller(
         let mut local_file = tokio::fs::File::open(local_path)
             .await
             .map_err(|e| AppError::Channel(format!("Failed to open local file: {}", e)))?;
-        let mut remote_file = sftp
-            .create(remote_path)
+        let mut remote_file = if backend.encoding().to_uppercase() != "UTF-8" {
+            // Encode UTF-8 path to GBK bytes
+            let path_bytes = match backend.encoding().to_uppercase().as_str() {
+                "GBK" | "GB2312" | "GB18030" => {
+                    let (gbk_bytes, _, _) = encoding_rs::GBK.encode(remote_path);
+                    gbk_bytes.into_owned()
+                }
+                _ => remote_path.as_bytes().to_vec(),
+            };
+            // Use open_with_flags_bytes with WRITE|CREATE|TRUNCATE flags
+            use russh_sftp::protocol::OpenFlags;
+            sftp.open_with_flags_bytes(
+                path_bytes,
+                OpenFlags::WRITE | OpenFlags::CREATE | OpenFlags::TRUNCATE,
+            )
             .await
-            .map_err(|e| AppError::Channel(format!("Failed to create remote file: {}", e)))?;
+            .map_err(|e| AppError::Channel(format!("Failed to create remote file: {}", e)))?
+        } else {
+            sftp.create(remote_path)
+                .await
+                .map_err(|e| AppError::Channel(format!("Failed to create remote file: {}", e)))?
+        };
 
         if total_size > 0 {
             let mut buf = vec![0u8; chunk_size];
@@ -1449,22 +1546,67 @@ impl RemoteFs for SftpBackend {
 
     async fn list_dir(&self, path: &str) -> AppResult<Vec<FileEntry>> {
         let sftp = self.open_sftp().await?;
-        let dir = sftp.read_dir(path).await?;
+
+        // Convert UTF-8 path to raw bytes for GBK encoding
+        let path_bytes = self.encode_path_for_sftp(path);
+        let dir = sftp.read_dir_bytes(path_bytes).await?;
 
         let mut pending = Vec::new();
         let mut uid_set = HashSet::new();
         let mut gid_set = HashSet::new();
+        let normalized_path = normalize_remote_dir_path(path);
+
         for entry in dir {
-            let name = entry.file_name();
-            if name == "." || name == ".." {
+            let name_from_entry = entry.file_name();
+            if name_from_entry == "." || name_from_entry == ".." {
                 continue;
             }
+
+            // Get raw bytes for the file name to preserve original encoding
+            let name_bytes = entry.file_name_bytes().to_vec();
+
+            // Decode using the connection's encoding setting
+            let name = self.decode_path_from_sftp(&name_bytes);
+
+            let full_path = join_remote_child(&normalized_path, &name);
+
+            // Cache the raw bytes path for later use in file operations
+            let mut cache = self.path_cache.write().await;
+            cache.insert(full_path.clone(), {
+                // For non-UTF-8 encodings, encode the entire path in the target encoding
+                if self.encoding.to_uppercase() != "UTF-8" {
+                    let mut path_bytes = match self.encoding.to_uppercase().as_str() {
+                        "GBK" | "GB2312" | "GB18030" => {
+                            let (gbk_bytes, _, _) = encoding_rs::GBK.encode(&normalized_path);
+                            gbk_bytes.into_owned()
+                        }
+                        _ => normalized_path.as_bytes().to_vec(),
+                    };
+                    if !path_bytes.ends_with(b"/") {
+                        path_bytes.push(b'/');
+                    }
+                    path_bytes.extend_from_slice(&name_bytes);
+                    path_bytes
+                } else {
+                    // UTF-8 encoding - just use as_bytes
+                    let mut path_bytes = normalized_path.as_bytes().to_vec();
+                    if !path_bytes.ends_with(b"/") {
+                        path_bytes.push(b'/');
+                    }
+                    path_bytes.extend_from_slice(&name_bytes);
+                    path_bytes
+                }
+            });
+
+            drop(cache);
+
             let file_type = entry.file_type();
             let is_symlink = file_type == FileType::Symlink;
-            let full_path = join_remote_child(normalize_remote_dir_path(path), &name);
+
+            // Use raw bytes for metadata operation to handle non-UTF-8 paths
             let is_symlink_to_dir = is_symlink
                 && sftp
-                    .metadata(&full_path)
+                    .metadata_bytes(name_bytes.clone())
                     .await
                     .ok()
                     .as_ref()
@@ -1602,29 +1744,35 @@ impl RemoteFs for SftpBackend {
 
     async fn remove_file(&self, path: &str) -> AppResult<()> {
         let sftp = self.open_sftp().await?;
-        let meta = match sftp.symlink_metadata(path).await {
-            Ok(meta) => meta,
-            Err(error) if is_sftp_not_found(&error) => {
-                let _ = sftp.close().await;
-                return Ok(());
-            }
-            Err(error) => {
-                let _ = sftp.close().await;
-                return Err(error.into());
-            }
-        };
 
-        if sftp_attrs_is_symlink(&meta) {
-            ignore_sftp_not_found(sftp.remove_file(path).await)?;
-        } else if sftp_attrs_is_dir(&meta) {
-            let _ = sftp.close().await;
-            self.remove_dir_fast(path).await?;
-            return Ok(());
-        } else {
-            ignore_sftp_not_found(sftp.remove_file(path).await)?;
+        // For non-UTF-8 encodings, use raw bytes path from cache
+        if self.encoding.to_uppercase() != "UTF-8" {
+            let cache = self.path_cache.read().await;
+            if let Some(raw_bytes) = cache.get(path) {
+                let raw_bytes = raw_bytes.clone();
+                drop(cache);
+
+                // Try to remove using raw bytes directly
+                let result = sftp.remove_file_bytes(raw_bytes).await;
+                let _ = sftp.close().await;
+
+                return match result {
+                    Ok(()) => Ok(()),
+                    Err(error) if is_sftp_not_found(&error) => Ok(()),
+                    Err(error) => Err(error.into()),
+                };
+            }
         }
+
+        // UTF-8 encoding or path not in cache - use regular path
+        let result = sftp.remove_file(path).await;
         let _ = sftp.close().await;
-        Ok(())
+
+        match result {
+            Ok(()) => Ok(()),
+            Err(error) if is_sftp_not_found(&error) => Ok(()),
+            Err(error) => Err(error.into()),
+        }
     }
 
     async fn rename(&self, old_path: &str, new_path: &str) -> AppResult<()> {
@@ -1636,13 +1784,43 @@ impl RemoteFs for SftpBackend {
 
     async fn create_file(&self, path: &str, mode: Option<String>) -> AppResult<()> {
         let sftp = self.open_sftp().await?;
-        let file = sftp.create(path).await?;
-        drop(file);
-        if let Some(ref m) = mode {
-            apply_remote_mode_after_create(&sftp, path, m, "file").await?;
+
+        // For non-UTF-8 encodings, encode the path in the target encoding
+        // and use open_bytes with WRITE flag to create the file
+        let result = if self.encoding.to_uppercase() != "UTF-8" {
+            // Encode UTF-8 path to GBK bytes
+            let path_bytes = match self.encoding.to_uppercase().as_str() {
+                "GBK" | "GB2312" | "GB18030" => {
+                    let (gbk_bytes, _, _) = encoding_rs::GBK.encode(path);
+                    gbk_bytes.into_owned()
+                }
+                _ => path.as_bytes().to_vec(),
+            };
+            // Use open_bytes with WRITE|CREATE|TRUNCATE flags
+            use russh_sftp::protocol::OpenFlags;
+            sftp.open_with_flags_bytes(
+                path_bytes,
+                OpenFlags::WRITE | OpenFlags::CREATE | OpenFlags::TRUNCATE,
+            )
+            .await
+        } else {
+            sftp.create(path).await
+        };
+
+        match result {
+            Ok(file) => {
+                drop(file);
+                if let Some(ref m) = mode {
+                    apply_remote_mode_after_create(&sftp, path, m, "file").await?;
+                }
+                let _ = sftp.close().await;
+                Ok(())
+            }
+            Err(error) => {
+                let _ = sftp.close().await;
+                Err(error.into())
+            }
         }
-        let _ = sftp.close().await;
-        Ok(())
     }
 
     async fn create_symlink(&self, link_path: &str, target_path: &str) -> AppResult<()> {
@@ -2187,11 +2365,13 @@ struct DirectoryTransferSummary {
     small_file_concurrency: usize,
 }
 
+#[allow(dead_code)]
 struct RemoveInventory {
     files: Vec<String>,
     dirs: Vec<String>,
 }
 
+#[allow(dead_code)]
 async fn collect_remove_inventory(sftp: &SftpSession, path: &str) -> AppResult<RemoveInventory> {
     let path = normalize_remote_dir_path(path).to_string();
     let dir = match sftp.read_dir(&path).await {
@@ -2225,6 +2405,7 @@ async fn collect_remove_inventory(sftp: &SftpSession, path: &str) -> AppResult<R
     Ok(RemoveInventory { files, dirs })
 }
 
+#[allow(dead_code)]
 async fn remove_inventory_concurrent(
     pool: SftpSessionPool,
     mut inventory: RemoveInventory,
@@ -2291,6 +2472,7 @@ async fn remove_inventory_concurrent(
 }
 
 impl SftpBackend {
+    #[allow(dead_code)]
     async fn remove_dir_fast(&self, path: &str) -> AppResult<()> {
         if is_safe_recursive_remove_target(path) {
             let command = format!("rm -rf -- {}", sh_quote(normalize_remote_dir_path(path)));
@@ -2309,6 +2491,7 @@ impl SftpBackend {
         self.remove_dir_concurrent_sftp(path).await
     }
 
+    #[allow(dead_code)]
     async fn remove_dir_concurrent_sftp(&self, path: &str) -> AppResult<()> {
         let sftp = self.open_sftp().await?;
         let max_open_handles = sftp.max_open_handles();
@@ -2566,6 +2749,7 @@ impl SftpBackend {
             directory_controller,
             transfer_settings,
             concurrency,
+            self.path_cache.clone(),
         )
         .await;
         pool.close_all().await;
@@ -2635,6 +2819,7 @@ async fn run_download_directory_workers(
     directory_controller: Arc<TransferController>,
     transfer_settings: &crate::config::TransferSettings,
     concurrency: SftpDirectoryConcurrency,
+    path_cache: Arc<RwLock<HashMap<String, Vec<u8>>>>,
 ) -> AppResult<DirectoryTransferSummary> {
     let worker_count = sftp_directory_file_concurrency(inventory.files.len(), concurrency);
     let total_files = inventory.total_files;
@@ -2654,6 +2839,7 @@ async fn run_download_directory_workers(
         let completed_bytes = completed_bytes.clone();
         let large_lane = large_lane.clone();
         let transfer_settings = transfer_settings.clone();
+        let path_cache = path_cache.clone();
         join_set.spawn(async move {
             loop {
                 wait_for_transfer_ready(&directory_controller).await?;
@@ -2681,6 +2867,7 @@ async fn run_download_directory_workers(
                     &completed_bytes,
                     total_size,
                     concurrency.small_file_concurrency,
+                    &path_cache,
                 )
                 .await?;
                 let completed = completed_count.fetch_add(1, Ordering::SeqCst) + 1;
@@ -2834,6 +3021,7 @@ async fn download_directory_file_with_session(
     completed_bytes: &Arc<AtomicU64>,
     total_size: u64,
     max_pipeline_depth: usize,
+    path_cache: &RwLock<HashMap<String, Vec<u8>>>,
 ) -> AppResult<u64> {
     use tokio::io::AsyncWriteExt;
 
@@ -2872,6 +3060,7 @@ async fn download_directory_file_with_session(
             max_pipeline_depth,
             directory_controller,
             None,
+            path_cache,
             |_current, delta| {
                 add_directory_transferred_bytes(
                     directory_controller,
diff --git a/src-tauri/src/core/ssh/auth.rs b/src-tauri/src/core/ssh/auth.rs
index 16f393d5..a0bc81d6 100644
--- a/src-tauri/src/core/ssh/auth.rs
+++ b/src-tauri/src/core/ssh/auth.rs
@@ -366,6 +366,8 @@ fn resolve_saved_ssh_config(
         .map(|settings| settings.terminal.x11_display)
         .unwrap_or_default();
 
+    let encoding = crate::config::resolve_connection_encoding(app, conn);
+
     Ok(SshConfig {
         connection_id,
         owner_window_label: None,
@@ -382,6 +384,7 @@ fn resolve_saved_ssh_config(
         post_login,
         ssh_algorithms: conn.ssh_algorithms.clone(),
         sftp: conn.sftp.clone(),
+        encoding,
     })
 }
 
diff --git a/src-tauri/src/core/ssh/client.rs b/src-tauri/src/core/ssh/client.rs
index df248a4c..b4aed473 100644
--- a/src-tauri/src/core/ssh/client.rs
+++ b/src-tauri/src/core/ssh/client.rs
@@ -42,6 +42,13 @@ pub struct SshConfig {
     pub ssh_algorithms: Option<SshAlgorithmPreferences>,
     #[serde(default)]
     pub sftp: SftpSettings,
+    /// Character encoding for terminal I/O (e.g. "UTF-8", "GBK").
+    #[serde(default = "default_encoding")]
+    pub encoding: String,
+}
+
+fn default_encoding() -> String {
+    "UTF-8".to_string()
 }
 
 #[derive(Debug, Clone, Serialize, PartialEq, Eq)]
diff --git a/src-tauri/src/core/ssh/io.rs b/src-tauri/src/core/ssh/io.rs
index e6491ec9..a4b579b0 100644
--- a/src-tauri/src/core/ssh/io.rs
+++ b/src-tauri/src/core/ssh/io.rs
@@ -3,6 +3,7 @@ use crate::config::SftpCwdFollowMode;
 use crate::core::capture::OutputCaptureProcessor;
 use crate::core::input::remap_del_to_bs;
 use crate::core::ssh::osc::{self, OscStripper, ShellKind};
+use crate::core::terminal_session::decode_terminal_output;
 use crate::core::zmodem::{
     ZmodemAction, ZmodemDetectResult, ZmodemDetector, ZmodemDirection, ZmodemDownloadOoDrain,
     ZmodemEvent, ZmodemTransfer, ZmodemUploadDrain, start_zmodem_transfer,
@@ -553,6 +554,7 @@ pub(super) async fn ssh_io_loop(
     startup_command: Option<SshStartupCommand>,
     backspace_mode: String,
     initial_notice: Option<String>,
+    encoding: String,
 ) {
     let backspace_as_bs = backspace_mode == "ctrl_h";
     let output_event = format!("terminal-output-{}", session_id);
@@ -633,7 +635,51 @@ pub(super) async fn ssh_io_loop(
                         if let Some(ref recorder) = recording_mgr {
                             recorder.write_input(&session_id, &data);
                         }
-                        let _ = channel.data(&data[..]).await;
+                        // Convert UTF-8 input to target encoding if needed
+                        let send_data = if encoding.to_uppercase() == "GBK"
+                            || encoding.to_uppercase() == "GB2312"
+                            || encoding.to_uppercase() == "GB18030"
+                        {
+                            // Convert UTF-8 bytes to GBK bytes
+                            // For GBK encoding, always remap DEL (0x7F) to BS (0x08)
+                            // because most GBK servers expect BS as the erase character
+                            let mut result = Vec::with_capacity(data.len());
+                            let mut utf8_buffer = Vec::new();
+
+                            for &byte in &data {
+                                let effective_byte = if byte == 0x7F { 0x08 } else { byte };
+
+                                if effective_byte < 0x20 {
+                                    // ASCII control character - flush buffered UTF-8 first
+                                    if !utf8_buffer.is_empty() {
+                                        let text = String::from_utf8_lossy(&utf8_buffer);
+                                        let (gbk_bytes, _, _) = encoding_rs::GBK.encode(&text);
+                                        result.extend_from_slice(&gbk_bytes);
+                                        utf8_buffer.clear();
+                                    }
+                                    result.push(effective_byte);
+                                } else {
+                                    utf8_buffer.push(byte);
+                                }
+                            }
+
+                            // Flush remaining buffered UTF-8
+                            if !utf8_buffer.is_empty() {
+                                let text = String::from_utf8_lossy(&utf8_buffer);
+                                let (gbk_bytes, _, _) = encoding_rs::GBK.encode(&text);
+                                result.extend_from_slice(&gbk_bytes);
+                            }
+
+                            result
+                        } else {
+                            // For UTF-8 mode, use the configured backspace mode
+                            let mut data = data;
+                            if backspace_as_bs {
+                                remap_del_to_bs(&mut data);
+                            }
+                            data
+                        };
+                        let _ = channel.data(&send_data[..]).await;
                     }
                     Some(SessionCommand::Resize { cols, rows }) => {
                         let _ = channel.window_change(cols, rows, 0, 0).await;
@@ -732,7 +778,7 @@ pub(super) async fn ssh_io_loop(
                                 ZmodemDetectResult::Detected { direction, passthrough, initial_bytes } => {
                                     // Forward any pre-header bytes to the terminal.
                                     if !passthrough.is_empty() {
-                                        let pre = String::from_utf8_lossy(&passthrough).to_string();
+                                        let pre = decode_terminal_output(&passthrough, &encoding);
                                         if !pre.is_empty() {
                                             output.push_owned(pre);
                                         }
@@ -764,7 +810,7 @@ pub(super) async fn ssh_io_loop(
                                     continue;
                                 }
                                 ZmodemDetectResult::NoMatch { passthrough } => {
-                                    let text = String::from_utf8_lossy(&passthrough).to_string();
+                                    let text = decode_terminal_output(&passthrough, &encoding);
                                     let mut result = stripper.push(&text);
 
                                     if capture_processor.has_active() {
@@ -797,7 +843,7 @@ pub(super) async fn ssh_io_loop(
                             }
                     }
                     Some(ChannelMsg::ExtendedData { ref data, .. }) => {
-                        let text = String::from_utf8_lossy(data).to_string();
+                        let text = decode_terminal_output(data, &encoding);
                         if let Some(ref recorder) = recording_mgr {
                             recorder.write_output(&session_id, &text);
                         }
diff --git a/src-tauri/src/core/ssh/session.rs b/src-tauri/src/core/ssh/session.rs
index 65fa6e30..7ff14e8d 100644
--- a/src-tauri/src/core/ssh/session.rs
+++ b/src-tauri/src/core/ssh/session.rs
@@ -278,6 +278,7 @@ async fn create_ssh_session_inner(
     let post_login = config.post_login.clone();
     let startup_command = startup_command.clone();
     let backspace_mode = config.backspace_mode.clone();
+    let encoding = config.encoding.clone();
     tokio::spawn(async move {
         ssh_io_loop(
             app,
@@ -296,6 +297,7 @@ async fn create_ssh_session_inner(
             startup_command,
             backspace_mode,
             initial_notice,
+            encoding,
         )
         .await;
     });
@@ -418,6 +420,7 @@ pub async fn create_multiplexed_ssh_session(
     let post_login = config.post_login.clone();
     let startup_command = startup_command.clone();
     let backspace_mode = config.backspace_mode.clone();
+    let encoding = config.encoding.clone();
     tokio::spawn(async move {
         ssh_io_loop(
             app,
@@ -436,6 +439,7 @@ pub async fn create_multiplexed_ssh_session(
             startup_command,
             backspace_mode,
             initial_notice,
+            encoding,
         )
         .await;
     });
diff --git a/src-tauri/src/core/terminal_session/local/config.rs b/src-tauri/src/core/terminal_session/local/config.rs
index 21e4d359..243032aa 100644
--- a/src-tauri/src/core/terminal_session/local/config.rs
+++ b/src-tauri/src/core/terminal_session/local/config.rs
@@ -4,6 +4,7 @@ pub struct LocalSessionConfig {
     pub shell_args: String,
     pub working_dir: Option<String>,
     pub name: String,
+    pub encoding: String,
 }
 
 #[derive(Debug, Clone, PartialEq, Eq)]
diff --git a/src-tauri/src/core/terminal_session/local/session.rs b/src-tauri/src/core/terminal_session/local/session.rs
index eb9be3a5..ce62482c 100644
--- a/src-tauri/src/core/terminal_session/local/session.rs
+++ b/src-tauri/src/core/terminal_session/local/session.rs
@@ -51,6 +51,14 @@ pub async fn create_local_session(
     let sid = session_id.clone();
     let mgr = manager.clone();
     let rt_handle = tokio::runtime::Handle::current();
+    let encoding = config
+        .as_ref()
+        .map(|c| c.encoding.clone())
+        .unwrap_or_else(|| {
+            crate::config::load_app_settings(&app)
+                .map(|settings| settings.interaction.default_encoding)
+                .unwrap_or_else(|_| "UTF-8".to_string())
+        });
 
     std::thread::spawn(move || {
         pty_session_thread(
@@ -64,6 +72,7 @@ pub async fn create_local_session(
             config,
             startup_script.script,
             ready_marker,
+            encoding,
         );
     });
 
@@ -81,6 +90,7 @@ fn pty_session_thread(
     config: Option<LocalSessionConfig>,
     startup_script: Option<String>,
     ready_marker: String,
+    encoding: String,
 ) {
     let pty_system = native_pty_system();
     let pair = match pty_system.openpty(PtySize {
@@ -229,6 +239,7 @@ fn pty_session_thread(
     let output_reader = output.clone();
     let manager_reader = manager.clone();
     let suppress_startup_output = startup_script.is_some();
+    let encoding_for_reader = encoding.clone();
     let (reader_done_tx, reader_done_rx) = std_mpsc::channel::<()>();
     std::thread::spawn(move || {
         let mut raw_buf = [0u8; 4096];
@@ -280,7 +291,7 @@ fn pty_session_thread(
                                 initial_bytes,
                             } => {
                                 if !passthrough.is_empty() {
-                                    let pre = String::from_utf8_lossy(&passthrough).to_string();
+                                    let pre = super::decode_terminal_output(&passthrough, &encoding_for_reader);
                                     if !pre.is_empty() {
                                         output_reader.push_owned(pre);
                                     }
@@ -325,7 +336,7 @@ fn pty_session_thread(
                         raw.to_vec()
                     };
 
-                    let text = String::from_utf8_lossy(&process_raw).to_string();
+                    let text = super::decode_terminal_output(&process_raw, &encoding_for_reader);
                     let mut result = stripper.push(&text);
 
                     for path in &result.cwd_paths {
diff --git a/src-tauri/src/core/terminal_session/mod.rs b/src-tauri/src/core/terminal_session/mod.rs
index 3b3e1557..f6bbcebe 100644
--- a/src-tauri/src/core/terminal_session/mod.rs
+++ b/src-tauri/src/core/terminal_session/mod.rs
@@ -3,3 +3,15 @@
 pub(crate) mod local;
 pub(crate) mod serial;
 pub(crate) mod telnet;
+
+/// Decodes raw bytes to a UTF-8 string using the specified encoding.
+/// Falls back to UTF-8 lossy conversion if encoding is not recognized.
+pub(crate) fn decode_terminal_output(data: &[u8], encoding: &str) -> String {
+    match encoding.to_uppercase().as_str() {
+        "GBK" | "GB2312" | "GB18030" => {
+            let (decoded, _, _) = encoding_rs::GBK.decode(data);
+            decoded.into_owned()
+        }
+        _ => String::from_utf8_lossy(data).into_owned(),
+    }
+}
diff --git a/src-tauri/src/core/terminal_session/serial/config.rs b/src-tauri/src/core/terminal_session/serial/config.rs
index c393ebe4..c7cdbd48 100644
--- a/src-tauri/src/core/terminal_session/serial/config.rs
+++ b/src-tauri/src/core/terminal_session/serial/config.rs
@@ -6,4 +6,5 @@ pub struct SerialConfig {
     pub stop_bits: String,
     pub name: String,
     pub backspace_mode: String,
+    pub encoding: String,
 }
diff --git a/src-tauri/src/core/terminal_session/serial/manager.rs b/src-tauri/src/core/terminal_session/serial/manager.rs
index 005bf5b0..c76e1d73 100644
--- a/src-tauri/src/core/terminal_session/serial/manager.rs
+++ b/src-tauri/src/core/terminal_session/serial/manager.rs
@@ -72,6 +72,13 @@ pub async fn create_serial_session(
     let sid = session_id.clone();
     let mgr = manager.clone();
     let rt_handle = tokio::runtime::Handle::current();
+    let encoding = if !config.encoding.is_empty() {
+        config.encoding.clone()
+    } else {
+        crate::config::load_app_settings(&app)
+            .map(|settings| settings.interaction.default_encoding)
+            .unwrap_or_else(|_| "UTF-8".to_string())
+    };
 
     std::thread::spawn(move || {
         serial_session_thread(
@@ -84,6 +91,7 @@ pub async fn create_serial_session(
             rt_handle,
             config,
             connection_id,
+            encoding,
             port,
             reader_port,
         );
diff --git a/src-tauri/src/core/terminal_session/serial/session.rs b/src-tauri/src/core/terminal_session/serial/session.rs
index d3c985d3..111d40a8 100644
--- a/src-tauri/src/core/terminal_session/serial/session.rs
+++ b/src-tauri/src/core/terminal_session/serial/session.rs
@@ -8,6 +8,7 @@ fn serial_session_thread(
     rt_handle: tokio::runtime::Handle,
     config: SerialConfig,
     connection_id: Option<String>,
+    encoding: String,
     port: Box<dyn SerialPort>,
     mut reader_port: Box<dyn SerialPort>,
 ) {
@@ -39,6 +40,7 @@ fn serial_session_thread(
     let port_writer_reader = port_writer.clone();
     let output_reader = output.clone();
     let recording_mgr_reader = recording_mgr.clone();
+    let encoding_reader = encoding.clone();
 
     let reader_running = Arc::new(std::sync::atomic::AtomicBool::new(true));
     let reader_flag = reader_running.clone();
@@ -96,7 +98,7 @@ fn serial_session_thread(
                             initial_bytes,
                         } => {
                             if !passthrough.is_empty() {
-                                let pre = String::from_utf8_lossy(&passthrough).to_string();
+                                let pre = super::decode_terminal_output(&passthrough, &encoding_reader);
                                 if !pre.is_empty() {
                                     if let Some(ref recorder) = recording_mgr_reader {
                                         recorder.write_output(&sid_reader, &pre);
@@ -138,7 +140,7 @@ fn serial_session_thread(
                         }
                     };
 
-                    let mut text = String::from_utf8_lossy(&process_raw).to_string();
+                    let mut text = super::decode_terminal_output(&process_raw, &encoding_reader);
                     if let Ok(mut proc) = capture_for_reader.lock() {
                         if proc.has_active() {
                             text = proc.process(&text);
diff --git a/src-tauri/src/core/terminal_session/telnet/manager.rs b/src-tauri/src/core/terminal_session/telnet/manager.rs
index 7dcd8673..bedf38cd 100644
--- a/src-tauri/src/core/terminal_session/telnet/manager.rs
+++ b/src-tauri/src/core/terminal_session/telnet/manager.rs
@@ -52,6 +52,13 @@ pub async fn create_telnet_session(
 
     let sid = session_id.clone();
     let mgr = manager.clone();
+    let encoding = if !config.encoding.is_empty() {
+        config.encoding.clone()
+    } else {
+        crate::config::load_app_settings(&app)
+            .map(|settings| settings.interaction.default_encoding)
+            .unwrap_or_else(|_| "UTF-8".to_string())
+    };
 
     tokio::spawn(async move {
         telnet_session_task(
@@ -62,6 +69,7 @@ pub async fn create_telnet_session(
             output_control_tx,
             config,
             connection_id,
+            encoding,
             startup_command,
         )
         .await;
diff --git a/src-tauri/src/core/terminal_session/telnet/session.rs b/src-tauri/src/core/terminal_session/telnet/session.rs
index 7a6d7726..f3fec8b9 100644
--- a/src-tauri/src/core/terminal_session/telnet/session.rs
+++ b/src-tauri/src/core/terminal_session/telnet/session.rs
@@ -40,6 +40,7 @@ async fn telnet_session_task(
     output_control_tx: mpsc::UnboundedSender<SessionCommand>,
     config: TelnetSessionConfig,
     connection_id: Option<String>,
+    encoding: String,
     startup_command: Option<TelnetStartupCommand>,
 ) {
     let backspace_as_bs = config.backspace_mode == "ctrl_h";
@@ -121,6 +122,7 @@ async fn telnet_session_task(
     let (reader_done_tx, mut reader_done_rx) = mpsc::unbounded_channel::<()>();
 
     let reader_config = config.clone();
+    let encoding_reader = encoding.clone();
     let reader_handle = tokio::spawn(async move {
         let mut buf = [0u8; 4096];
         let mut zmodem_detector = ZmodemDetector::new();
@@ -218,7 +220,7 @@ async fn telnet_session_task(
                             initial_bytes,
                         } => {
                             if !passthrough.is_empty() {
-                                let pre = String::from_utf8_lossy(&passthrough).to_string();
+                                let pre = super::decode_terminal_output(&passthrough, &encoding_reader);
                                 if !pre.is_empty() {
                                     if let Some(ref recorder) = recording_mgr_reader {
                                         recorder.write_output(&sid_reader, &pre);
@@ -256,7 +258,7 @@ async fn telnet_session_task(
                         }
                     };
 
-                    let mut text = String::from_utf8_lossy(&process_visible).to_string();
+                    let mut text = super::decode_terminal_output(&process_visible, &encoding_reader);
                     let mut proc = capture_for_reader.lock().await;
                     if proc.has_active() {
                         text = proc.process(&text);
diff --git a/src-tauri/src/core/terminal_session/telnet/types.rs b/src-tauri/src/core/terminal_session/telnet/types.rs
index 05383d38..1cc3310e 100644
--- a/src-tauri/src/core/terminal_session/telnet/types.rs
+++ b/src-tauri/src/core/terminal_session/telnet/types.rs
@@ -37,6 +37,7 @@ pub struct TelnetSessionConfig {
     pub send_naws: bool,
     pub send_sga: bool,
     pub auto_login: TelnetAutoLoginConfig,
+    pub encoding: String,
 }
 
 impl Default for TelnetSessionConfig {
@@ -56,6 +57,7 @@ impl Default for TelnetSessionConfig {
             send_naws: true,
             send_sga: true,
             auto_login: TelnetAutoLoginConfig::default(),
+            encoding: String::new(),
         }
     }
 }
diff --git a/src-tauri/src/storage/tests.rs b/src-tauri/src/storage/tests.rs
index 69c80a86..95166226 100644
--- a/src-tauri/src/storage/tests.rs
+++ b/src-tauri/src/storage/tests.rs
@@ -39,6 +39,7 @@ fn sample_connection(id: &str, group_id: Option<&str>, sort_order: i32) -> Saved
             username: "root".to_string(),
             backspace_mode: "del".to_string(),
             x11_forwarding: false,
+            encoding: String::new(),
         },
         group_id: group_id.map(str::to_string),
         description: None,
diff --git a/src-tauri/vendor/russh-sftp/Cargo.toml b/src-tauri/vendor/russh-sftp/Cargo.toml
index 5b02565f..16293f2d 100644
--- a/src-tauri/vendor/russh-sftp/Cargo.toml
+++ b/src-tauri/vendor/russh-sftp/Cargo.toml
@@ -29,6 +29,7 @@ chrono = "0.4.44"
 bytes = "1.11.1"
 log = "0.4.29"
 dashmap = "6.1.0"
+encoding_rs = "0.8"
 
 [target.'cfg(target_arch = "wasm32")'.dependencies]
 wasm-bindgen-futures = "0.4.71"
diff --git a/src-tauri/vendor/russh-sftp/src/client/fs/dir.rs b/src-tauri/vendor/russh-sftp/src/client/fs/dir.rs
index f61f12d9..5aa7f311 100644
--- a/src-tauri/vendor/russh-sftp/src/client/fs/dir.rs
+++ b/src-tauri/vendor/russh-sftp/src/client/fs/dir.rs
@@ -8,6 +8,8 @@ use crate::protocol::FileType;
 pub struct DirEntry {
     parent: Arc<str>,
     file: String,
+    /// Raw bytes of the file name, preserving original encoding.
+    file_bytes: Vec<u8>,
     metadata: Metadata,
 }
 
@@ -17,6 +19,11 @@ impl DirEntry {
         self.file.to_owned()
     }
 
+    /// Returns the raw bytes of the file name.
+    pub fn file_name_bytes(&self) -> &[u8] {
+        &self.file_bytes
+    }
+
     /// Returns the file type for the file that this entry points at.
     pub fn file_type(&self) -> FileType {
         self.metadata.file_type()
@@ -44,12 +51,28 @@ impl DirEntry {
             format!("{}/{}", self.parent, self.file)
         }
     }
+
+    /// Returns the full path as raw bytes.
+    pub fn path_bytes(&self) -> Vec<u8> {
+        if self.parent.is_empty() {
+            self.file_bytes.clone()
+        } else if self.parent.ends_with('/') {
+            let mut path = self.parent.as_bytes().to_vec();
+            path.extend_from_slice(&self.file_bytes);
+            path
+        } else {
+            let mut path = self.parent.as_bytes().to_vec();
+            path.push(b'/');
+            path.extend_from_slice(&self.file_bytes);
+            path
+        }
+    }
 }
 
 /// Iterator over the entries in a remote directory.
 pub struct ReadDir {
     pub(crate) parent: Arc<str>,
-    pub(crate) entries: VecDeque<(String, Metadata)>,
+    pub(crate) entries: VecDeque<(Vec<u8>, String, Metadata)>,
 }
 
 impl Iterator for ReadDir {
@@ -58,11 +81,12 @@ impl Iterator for ReadDir {
     fn next(&mut self) -> Option<Self::Item> {
         match self.entries.pop_front() {
             None => None,
-            Some(entry) if entry.0 == "." || entry.0 == ".." => self.next(),
-            Some(entry) => Some(DirEntry {
+            Some((_file_bytes, file, _metadata)) if file == "." || file == ".." => self.next(),
+            Some((file_bytes, file, metadata)) => Some(DirEntry {
                 parent: self.parent.clone(),
-                file: entry.0,
-                metadata: entry.1,
+                file,
+                file_bytes,
+                metadata,
             }),
         }
     }
diff --git a/src-tauri/vendor/russh-sftp/src/client/rawsession.rs b/src-tauri/vendor/russh-sftp/src/client/rawsession.rs
index c8b419a2..90ecb1b4 100644
--- a/src-tauri/vendor/russh-sftp/src/client/rawsession.rs
+++ b/src-tauri/vendor/russh-sftp/src/client/rawsession.rs
@@ -265,6 +265,45 @@ impl RawSftpSession {
                 Open {
                     id,
                     filename: filename.into(),
+                    filename_bytes: None,
+                    pflags: flags,
+                    attrs,
+                }
+                .into(),
+            )
+            .await?;
+
+        if let Packet::Handle(_) = result {
+            self.handles.fetch_add(1, Ordering::SeqCst);
+        }
+
+        into_with_status!(result, Handle)
+    }
+
+    /// Opens a file using raw bytes for the filename (preserves original encoding).
+    pub async fn open_bytes(
+        &self,
+        filename_bytes: Vec<u8>,
+        flags: OpenFlags,
+        attrs: FileAttributes,
+    ) -> SftpResult<Handle> {
+        if self
+            .limits
+            .open_handles
+            .is_some_and(|h| self.handles.load(Ordering::SeqCst) >= h)
+        {
+            return Err(Error::Limited("handle limit reached".to_owned()));
+        }
+
+        let id = self.use_next_id();
+        let filename = String::from_utf8_lossy(&filename_bytes).into_owned();
+        let result = self
+            .request(
+                Some(id),
+                Open {
+                    id,
+                    filename,
+                    filename_bytes: Some(filename_bytes),
                     pflags: flags,
                     attrs,
                 }
@@ -489,6 +528,38 @@ impl RawSftpSession {
                 OpenDir {
                     id,
                     path: path.into(),
+                    path_bytes: None,
+                }
+                .into(),
+            )
+            .await?;
+
+        if let Packet::Handle(_) = result {
+            self.handles.fetch_add(1, Ordering::SeqCst);
+        }
+
+        into_with_status!(result, Handle)
+    }
+
+    /// Opens a directory using raw bytes for the path (preserves original encoding).
+    pub async fn opendir_bytes(&self, path_bytes: Vec<u8>) -> SftpResult<Handle> {
+        if self
+            .limits
+            .open_handles
+            .is_some_and(|h| self.handles.load(Ordering::SeqCst) >= h)
+        {
+            return Err(Error::Limited("Handle limit reached".to_owned()));
+        }
+
+        let id = self.use_next_id();
+        let path = String::from_utf8_lossy(&path_bytes).into_owned();
+        let result = self
+            .request(
+                Some(id),
+                OpenDir {
+                    id,
+                    path,
+                    path_bytes: Some(path_bytes),
                 }
                 .into(),
             )
@@ -525,6 +596,26 @@ impl RawSftpSession {
                 Remove {
                     id,
                     filename: filename.into(),
+                    filename_bytes: None,
+                }
+                .into(),
+            )
+            .await?;
+
+        into_status!(result)
+    }
+
+    /// Removes a file using raw bytes for the filename (preserves original encoding).
+    pub async fn remove_bytes(&self, filename_bytes: Vec<u8>) -> SftpResult<Status> {
+        let id = self.use_next_id();
+        let filename = String::from_utf8_lossy(&filename_bytes).into_owned();
+        let result = self
+            .request(
+                Some(id),
+                Remove {
+                    id,
+                    filename,
+                    filename_bytes: Some(filename_bytes),
                 }
                 .into(),
             )
@@ -594,6 +685,26 @@ impl RawSftpSession {
                 Stat {
                     id,
                     path: path.into(),
+                    path_bytes: None,
+                }
+                .into(),
+            )
+            .await?;
+
+        into_with_status!(result, Attrs)
+    }
+
+    /// Queries metadata about the remote file using raw bytes (preserves original encoding).
+    pub async fn stat_bytes(&self, path_bytes: Vec<u8>) -> SftpResult<Attrs> {
+        let id = self.use_next_id();
+        let path = String::from_utf8_lossy(&path_bytes).into_owned();
+        let result = self
+            .request(
+                Some(id),
+                Stat {
+                    id,
+                    path,
+                    path_bytes: Some(path_bytes),
                 }
                 .into(),
             )
diff --git a/src-tauri/vendor/russh-sftp/src/client/session.rs b/src-tauri/vendor/russh-sftp/src/client/session.rs
index f5c93478..7ce0cad7 100644
--- a/src-tauri/vendor/russh-sftp/src/client/session.rs
+++ b/src-tauri/vendor/russh-sftp/src/client/session.rs
@@ -107,6 +107,11 @@ impl SftpSession {
         self.open_with_flags(filename, OpenFlags::READ).await
     }
 
+    /// Opens a file using raw bytes for the filename (preserves original encoding).
+    pub async fn open_bytes(&self, filename_bytes: Vec<u8>) -> SftpResult<File> {
+        self.open_with_flags_bytes(filename_bytes, OpenFlags::READ).await
+    }
+
     /// Opens a file in write-only mode.
     ///
     /// This function will create a file if it does not exist, and will truncate it if it does.
@@ -128,6 +133,16 @@ impl SftpSession {
             .await
     }
 
+    /// Attempts to open or create the file using raw bytes (preserves original encoding).
+    pub async fn open_with_flags_bytes(
+        &self,
+        filename_bytes: Vec<u8>,
+        flags: OpenFlags,
+    ) -> SftpResult<File> {
+        self.open_with_flags_and_attributes_bytes(filename_bytes, flags, FileAttributes::empty())
+            .await
+    }
+
     /// Attempts to open or create the file in the specified mode and with specified file attributes
     pub async fn open_with_flags_and_attributes<T: Into<String>>(
         &self,
@@ -139,6 +154,17 @@ impl SftpSession {
         Ok(File::new(self.session.clone(), handle, self.features))
     }
 
+    /// Attempts to open or create the file using raw bytes (preserves original encoding).
+    pub async fn open_with_flags_and_attributes_bytes(
+        &self,
+        filename_bytes: Vec<u8>,
+        flags: OpenFlags,
+        attributes: FileAttributes,
+    ) -> SftpResult<File> {
+        let handle = self.session.open_bytes(filename_bytes, flags, attributes).await?.handle;
+        Ok(File::new(self.session.clone(), handle, self.features))
+    }
+
     /// Requests the remote party for the absolute from the relative path.
     pub async fn canonicalize<T: Into<String>>(&self, path: T) -> SftpResult<String> {
         let name = self.session.realpath(path).await?;
@@ -196,7 +222,54 @@ impl SftpSession {
                     files = name
                         .files
                         .into_iter()
-                        .map(|f| (f.filename, f.attrs))
+                        .map(|f| {
+                            // Use filename_bytes if available, otherwise fall back to encoding filename as bytes
+                            let bytes = if f.filename_bytes.is_empty() {
+                                f.filename.as_bytes().to_vec()
+                            } else {
+                                f.filename_bytes
+                            };
+                            (bytes, f.filename, f.attrs)
+                        })
+                        .chain(files)
+                        .collect();
+                }
+                Err(Error::Status(status)) if status.status_code == StatusCode::Eof => break,
+                Err(err) => return Err(err),
+            }
+        }
+
+        self.session.close(handle).await?;
+
+        Ok(ReadDir {
+            parent,
+            entries: files.into(),
+        })
+    }
+
+    /// Returns an iterator over the entries within a directory using raw bytes for the path.
+    pub async fn read_dir_bytes(&self, path_bytes: Vec<u8>) -> SftpResult<ReadDir> {
+        let path_str = String::from_utf8_lossy(&path_bytes).into_owned();
+        let parent = Arc::from(path_str.as_str());
+
+        let handle = self.session.opendir_bytes(path_bytes).await?.handle;
+        let mut files = vec![];
+
+        loop {
+            match self.session.readdir(handle.as_str()).await {
+                Ok(name) => {
+                    files = name
+                        .files
+                        .into_iter()
+                        .map(|f| {
+                            // Use filename_bytes if available, otherwise fall back to encoding filename as bytes
+                            let bytes = if f.filename_bytes.is_empty() {
+                                f.filename.as_bytes().to_vec()
+                            } else {
+                                f.filename_bytes
+                            };
+                            (bytes, f.filename, f.attrs)
+                        })
                         .chain(files)
                         .collect();
                 }
@@ -232,6 +305,11 @@ impl SftpSession {
         self.session.remove(filename).await.map(|_| ())
     }
 
+    /// Removes a file using raw bytes for the filename (preserves original encoding).
+    pub async fn remove_file_bytes(&self, filename_bytes: Vec<u8>) -> SftpResult<()> {
+        self.session.remove_bytes(filename_bytes).await.map(|_| ())
+    }
+
     /// Rename a file or directory to a new name.
     pub async fn rename<O, N>(&self, oldpath: O, newpath: N) -> SftpResult<()>
     where
@@ -270,6 +348,11 @@ impl SftpSession {
         Ok(self.session.stat(path).await?.attrs)
     }
 
+    /// Queries metadata about the remote file using raw bytes (preserves original encoding).
+    pub async fn metadata_bytes(&self, path_bytes: Vec<u8>) -> SftpResult<Metadata> {
+        Ok(self.session.stat_bytes(path_bytes).await?.attrs)
+    }
+
     /// Sets metadata for a remote file.
     pub async fn set_metadata<P: Into<String>>(
         &self,
diff --git a/src-tauri/vendor/russh-sftp/src/protocol/file.rs b/src-tauri/vendor/russh-sftp/src/protocol/file.rs
index 5f2eccd5..d287b5c2 100644
--- a/src-tauri/vendor/russh-sftp/src/protocol/file.rs
+++ b/src-tauri/vendor/russh-sftp/src/protocol/file.rs
@@ -1,20 +1,150 @@
 use chrono::{DateTime, Utc};
+use serde::{Deserialize, Deserializer, Serialize, Serializer};
 use std::time::{Duration, UNIX_EPOCH};
 
 use super::FileAttributes;
 
-#[derive(Debug, Clone, Serialize, Deserialize)]
+/// Wrapper for raw bytes that uses deserialize_byte_buf
+#[derive(Debug, Clone)]
+struct RawBytes(Vec<u8>);
+
+impl Serialize for RawBytes {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        serializer.serialize_bytes(&self.0)
+    }
+}
+
+impl<'de> Deserialize<'de> for RawBytes {
+    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        struct RawBytesVisitor;
+
+        impl<'de> serde::de::Visitor<'de> for RawBytesVisitor {
+            type Value = RawBytes;
+
+            fn expecting(&self, formatter: &mut std::fmt::Formatter) -> std::fmt::Result {
+                formatter.write_str("raw bytes")
+            }
+
+            fn visit_bytes<E>(self, v: &[u8]) -> Result<Self::Value, E>
+            where
+                E: serde::de::Error,
+            {
+                Ok(RawBytes(v.to_vec()))
+            }
+
+            fn visit_byte_buf<E>(self, v: Vec<u8>) -> Result<Self::Value, E>
+            where
+                E: serde::de::Error,
+            {
+                Ok(RawBytes(v))
+            }
+
+            fn visit_seq<A>(self, mut seq: A) -> Result<Self::Value, A::Error>
+            where
+                A: serde::de::SeqAccess<'de>,
+            {
+                let mut bytes = Vec::new();
+                while let Some(byte) = seq.next_element()? {
+                    bytes.push(byte);
+                }
+                Ok(RawBytes(bytes))
+            }
+        }
+
+        deserializer.deserialize_byte_buf(RawBytesVisitor)
+    }
+}
+
+#[derive(Debug, Clone)]
 pub struct File {
     pub filename: String,
+    /// Raw bytes of the filename, preserving original encoding.
+    /// Used for serialization to send back to server.
+    pub filename_bytes: Vec<u8>,
     pub longname: String,
     pub attrs: FileAttributes,
 }
 
+impl Serialize for File {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        use serde::ser::SerializeStruct;
+        let mut state = serializer.serialize_struct("File", 3)?;
+        // Use raw bytes for serialization to preserve original encoding
+        state.serialize_field("filename", &RawBytes(self.filename_bytes.clone()))?;
+        state.serialize_field("longname", &self.longname)?;
+        state.serialize_field("attrs", &self.attrs)?;
+        state.end()
+    }
+}
+
+impl<'de> Deserialize<'de> for File {
+    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        use serde::de::{self, SeqAccess, Visitor};
+        use std::fmt;
+
+        struct FileVisitor;
+
+        impl<'de> Visitor<'de> for FileVisitor {
+            type Value = File;
+
+            fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
+                formatter.write_str("struct File")
+            }
+
+            fn visit_seq<A>(self, mut seq: A) -> Result<File, A::Error>
+            where
+                A: SeqAccess<'de>,
+            {
+                // Field 0: filename as raw bytes using RawBytes wrapper
+                let raw: RawBytes = seq
+                    .next_element()?
+                    .ok_or_else(|| de::Error::invalid_length(0, &self))?;
+                let filename_bytes = raw.0;
+                // Field 1: longname
+                let longname: String = seq
+                    .next_element()?
+                    .ok_or_else(|| de::Error::invalid_length(1, &self))?;
+                // Field 2: attrs
+                let attrs: FileAttributes = seq
+                    .next_element()?
+                    .ok_or_else(|| de::Error::invalid_length(2, &self))?;
+
+                // Decode filename from bytes using lossy UTF-8 for display
+                let filename = String::from_utf8_lossy(&filename_bytes).into_owned();
+
+                Ok(File {
+                    filename,
+                    filename_bytes,
+                    longname,
+                    attrs,
+                })
+            }
+        }
+
+        const FIELDS: &[&str] = &["filename", "longname", "attrs"];
+        deserializer.deserialize_struct("File", FIELDS, FileVisitor)
+    }
+}
+
 impl File {
     /// Omits `longname` and set dummy `attributes`. This is mainly used for [`crate::server::Handler::realpath`] as per the standard
     pub fn dummy<S: Into<String>>(filename: S) -> Self {
+        let filename = filename.into();
         Self {
-            filename: filename.into(),
+            filename: filename.clone(),
+            filename_bytes: filename.into_bytes(),
             longname: "".to_string(),
             attrs: FileAttributes::default(),
         }
@@ -22,8 +152,10 @@ impl File {
 
     /// Implies the use of longname
     pub fn new<S: Into<String>>(filename: S, attrs: FileAttributes) -> Self {
+        let filename = filename.into();
         let mut file = Self {
-            filename: filename.into(),
+            filename: filename.clone(),
+            filename_bytes: filename.clone().into_bytes(),
             longname: "".to_string(),
             attrs,
         };
diff --git a/src-tauri/vendor/russh-sftp/src/protocol/open.rs b/src-tauri/vendor/russh-sftp/src/protocol/open.rs
index 28a198f8..88c2d615 100644
--- a/src-tauri/vendor/russh-sftp/src/protocol/open.rs
+++ b/src-tauri/vendor/russh-sftp/src/protocol/open.rs
@@ -1,5 +1,7 @@
 use std::fs;
 
+use serde::{Deserialize, Deserializer, Serialize, Serializer};
+
 use super::{impl_packet_for, impl_request_id, FileAttributes, Packet, RequestId};
 
 /// Opening flags according to the specification
@@ -51,13 +53,78 @@ impl From<OpenFlags> for fs::OpenOptions {
 }
 
 /// Implementation for `SSH_FXP_OPEN`
-#[derive(Debug, Serialize, Deserialize)]
+#[derive(Debug)]
 pub struct Open {
     pub id: u32,
     pub filename: String,
+    /// Raw bytes of the filename, preserving original encoding.
+    /// When present, used for serialization instead of filename.
+    pub filename_bytes: Option<Vec<u8>>,
     pub pflags: OpenFlags,
     pub attrs: FileAttributes,
 }
 
+impl Serialize for Open {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        use serde::ser::SerializeStruct;
+        let mut state = serializer.serialize_struct("Open", 4)?;
+        state.serialize_field("id", &self.id)?;
+        // Use raw bytes if available to preserve original encoding
+        match &self.filename_bytes {
+            Some(bytes) => state.serialize_field("filename", bytes)?,
+            None => state.serialize_field("filename", &self.filename)?,
+        }
+        state.serialize_field("pflags", &self.pflags)?;
+        state.serialize_field("attrs", &self.attrs)?;
+        state.end()
+    }
+}
+
+impl<'de> Deserialize<'de> for Open {
+    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        use serde::de::{self, SeqAccess, Visitor};
+        use std::fmt;
+
+        struct OpenVisitor;
+
+        impl<'de> Visitor<'de> for OpenVisitor {
+            type Value = Open;
+
+            fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
+                formatter.write_str("struct Open")
+            }
+
+            fn visit_seq<A>(self, mut seq: A) -> Result<Open, A::Error>
+            where
+                A: SeqAccess<'de>,
+            {
+                let id: u32 = seq.next_element()?.ok_or_else(|| de::Error::invalid_length(0, &self))?;
+                let filename_bytes: Vec<u8> = seq.next_element()?.ok_or_else(|| de::Error::invalid_length(1, &self))?;
+                let pflags: OpenFlags = seq.next_element()?.ok_or_else(|| de::Error::invalid_length(2, &self))?;
+                let attrs: FileAttributes = seq.next_element()?.ok_or_else(|| de::Error::invalid_length(3, &self))?;
+
+                let filename = String::from_utf8_lossy(&filename_bytes).into_owned();
+
+                Ok(Open {
+                    id,
+                    filename,
+                    filename_bytes: Some(filename_bytes),
+                    pflags,
+                    attrs,
+                })
+            }
+        }
+
+        const FIELDS: &[&str] = &["id", "filename", "pflags", "attrs"];
+        deserializer.deserialize_struct("Open", FIELDS, OpenVisitor)
+    }
+}
+
 impl_request_id!(Open);
 impl_packet_for!(Open);
diff --git a/src-tauri/vendor/russh-sftp/src/protocol/opendir.rs b/src-tauri/vendor/russh-sftp/src/protocol/opendir.rs
index 174e9045..8e15f91b 100644
--- a/src-tauri/vendor/russh-sftp/src/protocol/opendir.rs
+++ b/src-tauri/vendor/russh-sftp/src/protocol/opendir.rs
@@ -1,10 +1,70 @@
+use serde::{Deserialize, Deserializer, Serialize, Serializer};
+
 use super::{impl_packet_for, impl_request_id, Packet, RequestId};
 
 /// Implementation for `SSH_FXP_OPENDIR`
-#[derive(Debug, Serialize, Deserialize)]
+#[derive(Debug)]
 pub struct OpenDir {
     pub id: u32,
     pub path: String,
+    /// Raw bytes of the path, preserving original encoding.
+    /// When present, used for serialization instead of path.
+    pub path_bytes: Option<Vec<u8>>,
+}
+
+impl Serialize for OpenDir {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        use serde::ser::SerializeStruct;
+        let mut state = serializer.serialize_struct("OpenDir", 2)?;
+        state.serialize_field("id", &self.id)?;
+        // Use raw bytes if available to preserve original encoding
+        match &self.path_bytes {
+            Some(bytes) => state.serialize_field("path", bytes)?,
+            None => state.serialize_field("path", &self.path)?,
+        }
+        state.end()
+    }
+}
+
+impl<'de> Deserialize<'de> for OpenDir {
+    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        use serde::de::{self, SeqAccess, Visitor};
+        use std::fmt;
+
+        struct OpenDirVisitor;
+
+        impl<'de> Visitor<'de> for OpenDirVisitor {
+            type Value = OpenDir;
+
+            fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
+                formatter.write_str("struct OpenDir")
+            }
+
+            fn visit_seq<A>(self, mut seq: A) -> Result<OpenDir, A::Error>
+            where
+                A: SeqAccess<'de>,
+            {
+                let id: u32 = seq.next_element()?.ok_or_else(|| de::Error::invalid_length(0, &self))?;
+                let path_bytes: Vec<u8> = seq.next_element()?.ok_or_else(|| de::Error::invalid_length(1, &self))?;
+                let path = String::from_utf8_lossy(&path_bytes).into_owned();
+
+                Ok(OpenDir {
+                    id,
+                    path,
+                    path_bytes: Some(path_bytes),
+                })
+            }
+        }
+
+        const FIELDS: &[&str] = &["id", "path"];
+        deserializer.deserialize_struct("OpenDir", FIELDS, OpenDirVisitor)
+    }
 }
 
 impl_request_id!(OpenDir);
diff --git a/src-tauri/vendor/russh-sftp/src/protocol/remove.rs b/src-tauri/vendor/russh-sftp/src/protocol/remove.rs
index ca9a0879..45f97345 100644
--- a/src-tauri/vendor/russh-sftp/src/protocol/remove.rs
+++ b/src-tauri/vendor/russh-sftp/src/protocol/remove.rs
@@ -1,10 +1,70 @@
+use serde::{Deserialize, Deserializer, Serialize, Serializer};
+
 use super::{impl_packet_for, impl_request_id, Packet, RequestId};
 
 /// Implementation for `SSH_FXP_REMOVE`
-#[derive(Debug, Serialize, Deserialize)]
+#[derive(Debug)]
 pub struct Remove {
     pub id: u32,
     pub filename: String,
+    /// Raw bytes of the filename, preserving original encoding.
+    /// When present, used for serialization instead of filename.
+    pub filename_bytes: Option<Vec<u8>>,
+}
+
+impl Serialize for Remove {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        use serde::ser::SerializeStruct;
+        let mut state = serializer.serialize_struct("Remove", 2)?;
+        state.serialize_field("id", &self.id)?;
+        // Use raw bytes if available to preserve original encoding
+        match &self.filename_bytes {
+            Some(bytes) => state.serialize_field("filename", bytes)?,
+            None => state.serialize_field("filename", &self.filename)?,
+        }
+        state.end()
+    }
+}
+
+impl<'de> Deserialize<'de> for Remove {
+    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        use serde::de::{self, SeqAccess, Visitor};
+        use std::fmt;
+
+        struct RemoveVisitor;
+
+        impl<'de> Visitor<'de> for RemoveVisitor {
+            type Value = Remove;
+
+            fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
+                formatter.write_str("struct Remove")
+            }
+
+            fn visit_seq<A>(self, mut seq: A) -> Result<Remove, A::Error>
+            where
+                A: SeqAccess<'de>,
+            {
+                let id: u32 = seq.next_element()?.ok_or_else(|| de::Error::invalid_length(0, &self))?;
+                let filename_bytes: Vec<u8> = seq.next_element()?.ok_or_else(|| de::Error::invalid_length(1, &self))?;
+                let filename = String::from_utf8_lossy(&filename_bytes).into_owned();
+
+                Ok(Remove {
+                    id,
+                    filename,
+                    filename_bytes: Some(filename_bytes),
+                })
+            }
+        }
+
+        const FIELDS: &[&str] = &["id", "filename"];
+        deserializer.deserialize_struct("Remove", FIELDS, RemoveVisitor)
+    }
 }
 
 impl_request_id!(Remove);
diff --git a/src-tauri/vendor/russh-sftp/src/protocol/stat.rs b/src-tauri/vendor/russh-sftp/src/protocol/stat.rs
index ccc22d9d..0dee7384 100644
--- a/src-tauri/vendor/russh-sftp/src/protocol/stat.rs
+++ b/src-tauri/vendor/russh-sftp/src/protocol/stat.rs
@@ -1,10 +1,70 @@
+use serde::{Deserialize, Deserializer, Serialize, Serializer};
+
 use super::{impl_packet_for, impl_request_id, Packet, RequestId};
 
 /// Implementation for `SSH_FXP_STAT`
-#[derive(Debug, Serialize, Deserialize)]
+#[derive(Debug)]
 pub struct Stat {
     pub id: u32,
     pub path: String,
+    /// Raw bytes of the path, preserving original encoding.
+    /// When present, used for serialization instead of path.
+    pub path_bytes: Option<Vec<u8>>,
+}
+
+impl Serialize for Stat {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        use serde::ser::SerializeStruct;
+        let mut state = serializer.serialize_struct("Stat", 2)?;
+        state.serialize_field("id", &self.id)?;
+        // Use raw bytes if available to preserve original encoding
+        match &self.path_bytes {
+            Some(bytes) => state.serialize_field("path", bytes)?,
+            None => state.serialize_field("path", &self.path)?,
+        }
+        state.end()
+    }
+}
+
+impl<'de> Deserialize<'de> for Stat {
+    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        use serde::de::{self, SeqAccess, Visitor};
+        use std::fmt;
+
+        struct StatVisitor;
+
+        impl<'de> Visitor<'de> for StatVisitor {
+            type Value = Stat;
+
+            fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
+                formatter.write_str("struct Stat")
+            }
+
+            fn visit_seq<A>(self, mut seq: A) -> Result<Stat, A::Error>
+            where
+                A: SeqAccess<'de>,
+            {
+                let id: u32 = seq.next_element()?.ok_or_else(|| de::Error::invalid_length(0, &self))?;
+                let path_bytes: Vec<u8> = seq.next_element()?.ok_or_else(|| de::Error::invalid_length(1, &self))?;
+                let path = String::from_utf8_lossy(&path_bytes).into_owned();
+
+                Ok(Stat {
+                    id,
+                    path,
+                    path_bytes: Some(path_bytes),
+                })
+            }
+        }
+
+        const FIELDS: &[&str] = &["id", "path"];
+        deserializer.deserialize_struct("Stat", FIELDS, StatVisitor)
+    }
 }
 
 impl_request_id!(Stat);
diff --git a/src/components/sessions/LocalTerminal.tsx b/src/components/sessions/LocalTerminal.tsx
index 923d694b..097e8a91 100644
--- a/src/components/sessions/LocalTerminal.tsx
+++ b/src/components/sessions/LocalTerminal.tsx
@@ -19,6 +19,8 @@ interface LocalTerminalProps {
   setShellArgs: (v: string) => void;
   workingDir: string;
   setWorkingDir: (v: string) => void;
+  encoding: string;
+  setEncoding: (v: string) => void;
 }
 
 const BUILTIN_SHELL_PATHS = ["powershell.exe", "cmd.exe", "bash", "wsl.exe", "wt.exe"] as const;
@@ -30,6 +32,8 @@ export function LocalTerminal({
   setShellArgs,
   workingDir,
   setWorkingDir,
+  encoding,
+  setEncoding,
 }: LocalTerminalProps) {
   const { t } = useTranslation();
 
@@ -139,6 +143,21 @@ export function LocalTerminal({
           onChange={(e) => setWorkingDir(e.target.value)}
         />
       </div>
+      <div>
+        <Label className="text-[0.6875rem] text-muted-foreground">
+          {t("connection.encoding")}
+        </Label>
+        <Select value={encoding} onValueChange={setEncoding}>
+          <SelectTrigger className="mt-1 h-8 w-full text-xs">
+            <SelectValue placeholder={t("connection.encodingFollowGlobal")} />
+          </SelectTrigger>
+          <SelectContent>
+            <SelectItem value="global">{t("connection.encodingFollowGlobal")}</SelectItem>
+            <SelectItem value="UTF-8">UTF-8</SelectItem>
+            <SelectItem value="GBK">GBK</SelectItem>
+          </SelectContent>
+        </Select>
+      </div>
     </div>
   );
 }
diff --git a/src/components/sessions/SerialForm.tsx b/src/components/sessions/SerialForm.tsx
index 3feb5ef6..4487b952 100644
--- a/src/components/sessions/SerialForm.tsx
+++ b/src/components/sessions/SerialForm.tsx
@@ -43,6 +43,8 @@ interface SerialFormProps {
   setStopBits: (v: string) => void;
   backspaceMode: string;
   setBackspaceMode: (v: string) => void;
+  encoding: string;
+  setEncoding: (v: string) => void;
 }
 
 function RequiredMark() {
@@ -202,6 +204,8 @@ export function SerialForm({
   setStopBits,
   backspaceMode,
   setBackspaceMode,
+  encoding,
+  setEncoding,
 }: SerialFormProps) {
   const { t } = useTranslation();
 
@@ -329,6 +333,21 @@ export function SerialForm({
           </Select>
         </div>
       </div>
+      <div className="max-w-xs">
+        <Label className="text-xs font-medium text-foreground/80">
+          {t("connection.encoding")}
+        </Label>
+        <Select value={encoding} onValueChange={setEncoding}>
+          <SelectTrigger className="mt-1 h-8 w-full text-xs">
+            <SelectValue placeholder={t("connection.encodingFollowGlobal")} />
+          </SelectTrigger>
+          <SelectContent>
+            <SelectItem value="global">{t("connection.encodingFollowGlobal")}</SelectItem>
+            <SelectItem value="UTF-8">UTF-8</SelectItem>
+            <SelectItem value="GBK">GBK</SelectItem>
+          </SelectContent>
+        </Select>
+      </div>
     </div>
   );
 }
diff --git a/src/components/sessions/SshForm.tsx b/src/components/sessions/SshForm.tsx
index 9887f0d9..89bc5f54 100644
--- a/src/components/sessions/SshForm.tsx
+++ b/src/components/sessions/SshForm.tsx
@@ -109,6 +109,8 @@ interface SshFormProps {
   sftpSettings: SftpSettings;
   setSftpSettings: (v: SftpSettings) => void;
   connectionId?: string;
+  encoding: string;
+  setEncoding: (v: string) => void;
 }
 
 function RequiredMark() {
@@ -426,6 +428,8 @@ export function SshForm({
   sftpSettings,
   setSftpSettings,
   connectionId,
+  encoding,
+  setEncoding,
 }: SshFormProps) {
   const { t } = useTranslation();
   const [sshKeys, setSshKeys] = useState<SshKey[]>([]);
@@ -905,6 +909,22 @@ export function SshForm({
         </Tabs>
       </div>
 
+      <div>
+        <Label className="text-xs font-medium text-foreground/80">
+          {t("connection.encoding")}
+        </Label>
+        <Select value={encoding} onValueChange={setEncoding}>
+          <SelectTrigger className="mt-1 h-8 w-full text-xs">
+            <SelectValue placeholder={t("connection.encodingFollowGlobal")} />
+          </SelectTrigger>
+          <SelectContent>
+            <SelectItem value="global">{t("connection.encodingFollowGlobal")}</SelectItem>
+            <SelectItem value="UTF-8">UTF-8</SelectItem>
+            <SelectItem value="GBK">GBK</SelectItem>
+          </SelectContent>
+        </Select>
+      </div>
+
       <Collapsible open={advancedOpen} onOpenChange={setAdvancedOpen}>
         <CollapsibleTrigger className="group flex w-full items-center gap-1.5 text-xs text-muted-foreground transition-colors hover:text-foreground">
           <MdChevronRight
diff --git a/src/components/sessions/TelnetForm.tsx b/src/components/sessions/TelnetForm.tsx
index 59b63841..7eca81bd 100644
--- a/src/components/sessions/TelnetForm.tsx
+++ b/src/components/sessions/TelnetForm.tsx
@@ -66,6 +66,8 @@ interface TelnetFormProps {
   sendSga: boolean;
   setSendSga: (v: boolean) => void;
   connectionId?: string;
+  encoding: string;
+  setEncoding: (v: string) => void;
 }
 
 function RequiredMark() {
@@ -104,6 +106,8 @@ export function TelnetForm({
   sendSga,
   setSendSga,
   connectionId,
+  encoding,
+  setEncoding,
 }: TelnetFormProps) {
   const { t } = useTranslation();
   const [advancedOpen, setAdvancedOpen] = useState(false);
@@ -551,6 +555,22 @@ export function TelnetForm({
           </div>
         </DialogContent>
       </Dialog>
+
+      <div>
+        <Label className="text-xs font-medium text-foreground/80">
+          {t("connection.encoding")}
+        </Label>
+        <Select value={encoding} onValueChange={setEncoding}>
+          <SelectTrigger className="mt-1 h-8 w-full text-xs">
+            <SelectValue placeholder={t("connection.encodingFollowGlobal")} />
+          </SelectTrigger>
+          <SelectContent>
+            <SelectItem value="global">{t("connection.encodingFollowGlobal")}</SelectItem>
+            <SelectItem value="UTF-8">UTF-8</SelectItem>
+            <SelectItem value="GBK">GBK</SelectItem>
+          </SelectContent>
+        </Select>
+      </div>
     </div>
   );
 }
diff --git a/src/i18n/locales/en.json b/src/i18n/locales/en.json
index 8b8a9bf8..db262f36 100644
--- a/src/i18n/locales/en.json
+++ b/src/i18n/locales/en.json
@@ -220,6 +220,10 @@
     "weeks": "weeks",
     "years": "years"
   },
+  "connection": {
+    "encoding": "Terminal Encoding",
+    "encodingFollowGlobal": "Follow Global Settings"
+  },
   "credentialAutofill": {
     "dismiss": "Dismiss",
     "fill": "Fill",
diff --git a/src/i18n/locales/ko.json b/src/i18n/locales/ko.json
index 280ae485..dc3e9417 100644
--- a/src/i18n/locales/ko.json
+++ b/src/i18n/locales/ko.json
@@ -220,6 +220,10 @@
     "weeks": "주",
     "years": "년"
   },
+  "connection": {
+    "encoding": "인코딩",
+    "encodingFollowGlobal": "전역 설정 따르기"
+  },
   "credentialAutofill": {
     "dismiss": "닫기",
     "fill": "채우기",
diff --git a/src/i18n/locales/zh-CN.json b/src/i18n/locales/zh-CN.json
index 541513ea..5e77a249 100644
--- a/src/i18n/locales/zh-CN.json
+++ b/src/i18n/locales/zh-CN.json
@@ -220,6 +220,10 @@
     "weeks": "周",
     "years": "年"
   },
+  "connection": {
+    "encoding": "终端编码",
+    "encodingFollowGlobal": "跟随全局设置"
+  },
   "credentialAutofill": {
     "dismiss": "关闭",
     "fill": "填充",
diff --git a/src/pages/NewSessionPage.tsx b/src/pages/NewSessionPage.tsx
index aefa16a0..317b99a1 100644
--- a/src/pages/NewSessionPage.tsx
+++ b/src/pages/NewSessionPage.tsx
@@ -167,6 +167,9 @@ export default function NewSessionPage() {
   const [telnetSendNaws, setTelnetSendNaws] = useState(true);
   const [telnetSendSga, setTelnetSendSga] = useState(true);
 
+  // Per-connection encoding ("global" = follow global setting)
+  const [encoding, setEncoding] = useState("global");
+
   useEffect(() => {
     invoke<Group[]>("get_groups")
       .then(setGroups)
@@ -204,6 +207,7 @@ export default function NewSessionPage() {
           serial: "serial",
         };
         setCurrentTab(tabMap[found.type] || "ssh");
+        setEncoding(found.encoding || "global");
 
         if (found.type === "ssh") {
           setHost(found.host || "");
@@ -324,6 +328,7 @@ export default function NewSessionPage() {
     setTelnetForceCharacterAtATime(false);
     setTelnetSendNaws(true);
     setTelnetSendSga(true);
+    setEncoding("global");
     setShowIconPicker(false);
     setError("");
     setConnecting(false);
@@ -650,6 +655,7 @@ export default function NewSessionPage() {
         sort_order: sortOrder,
         icon: iconKey || undefined,
         icon_auto_detect: currentTab === "ssh" ? iconAutoDetect : false,
+        encoding: encoding === "global" ? undefined : encoding,
         ...(currentTab === "ssh"
           ? {
               host: normalizedHost,
@@ -1050,6 +1056,8 @@ export default function NewSessionPage() {
               sftpSettings={sftpSettings}
               setSftpSettings={setSftpSettings}
               connectionId={initialData?.id || editId}
+              encoding={encoding}
+              setEncoding={setEncoding}
             />
           </TabsContent>
 
@@ -1061,6 +1069,8 @@ export default function NewSessionPage() {
               setShellArgs={setShellArgs}
               workingDir={workingDir}
               setWorkingDir={setWorkingDir}
+              encoding={encoding}
+              setEncoding={setEncoding}
             />
           </TabsContent>
 
@@ -1097,6 +1107,8 @@ export default function NewSessionPage() {
               sendSga={telnetSendSga}
               setSendSga={setTelnetSendSga}
               connectionId={initialData?.id || editId}
+              encoding={encoding}
+              setEncoding={setEncoding}
             />
           </TabsContent>
 
@@ -1120,6 +1132,8 @@ export default function NewSessionPage() {
               setStopBits={setStopBits}
               backspaceMode={serialBackspaceMode}
               setBackspaceMode={setSerialBackspaceMode}
+              encoding={encoding}
+              setEncoding={setEncoding}
             />
           </TabsContent>
 
diff --git a/src/types/global.d.ts b/src/types/global.d.ts
index 09321230..33dbfec5 100644
--- a/src/types/global.d.ts
+++ b/src/types/global.d.ts
@@ -108,6 +108,7 @@ export interface SshConfig {
   post_login?: { command: string; delay_ms: number } | null;
   ssh_algorithms?: SshAlgorithmPreferences | null;
   sftp?: SftpSettings;
+  encoding?: string;
 }
 
 /** SSH authentication: none, password, or private key (PEM content). */
@@ -299,6 +300,8 @@ export interface SavedConnection {
   auto_login?: TelnetAutoLoginConfig;
   /** SSH-only: enables X11 forwarding for remote graphical applications. */
   x11_forwarding?: boolean;
+  /** Per-connection encoding override. Empty string means follow global setting. */
+  encoding?: string;
 }
 
 /** Stored OTP entry for two-factor authentication. */