diff --git a/src/TelegramPanel.Core/Interfaces/IAccountService.cs b/src/TelegramPanel.Core/Interfaces/IAccountService.cs
index 84f7113..57c2815 100644
--- a/src/TelegramPanel.Core/Interfaces/IAccountService.cs
+++ b/src/TelegramPanel.Core/Interfaces/IAccountService.cs
@@ -41,6 +41,11 @@ public interface IAccountService
     /// 检查账号状态
     /// </summary>
     Task<AccountStatus> CheckStatusAsync(int accountId);
+
+    /// <summary>
+    /// 释放并移除指定账号的 Telegram 客户端（用于避免 session 文件长期被占用）。
+    /// </summary>
+    Task ReleaseClientAsync(int accountId);
 }
 
 /// <summary>
diff --git a/src/TelegramPanel.Core/Services/Telegram/AccountService.cs b/src/TelegramPanel.Core/Services/Telegram/AccountService.cs
index dad6fa9..59af436 100644
--- a/src/TelegramPanel.Core/Services/Telegram/AccountService.cs
+++ b/src/TelegramPanel.Core/Services/Telegram/AccountService.cs
@@ -230,6 +230,11 @@ public class AccountService : IAccountService
         return Task.FromResult(AccountStatus.Active);
     }
 
+    public Task ReleaseClientAsync(int accountId)
+    {
+        return _clientPool.RemoveClientAsync(accountId);
+    }
+
     private static AccountInfo MapToAccountInfo(int accountId, WTelegram.Client client)
     {
         var user = client.User!;
diff --git a/src/TelegramPanel.Web/Components/Pages/AccountLogin.razor b/src/TelegramPanel.Web/Components/Pages/AccountLogin.razor
index f3ce6e6..0a7d086 100644
--- a/src/TelegramPanel.Web/Components/Pages/AccountLogin.razor
+++ b/src/TelegramPanel.Web/Components/Pages/AccountLogin.razor
@@ -156,8 +156,20 @@
         _ => "下一步"
     };
 
-    private Task ResetAsync()
+    private async Task ResetAsync()
     {
+        if (accountId != 0)
+        {
+            try
+            {
+                await AccountService.ReleaseClientAsync(accountId);
+            }
+            catch
+            {
+                // 忽略释放失败，避免影响 UI 重置
+            }
+        }
+
         accountId = 0;
         phoneNumber = "";
         verificationCode = "";
@@ -165,7 +177,6 @@
         username = "";
         userId = 0;
         currentStep = LoginStep.Phone;
-        return Task.CompletedTask;
     }
 
     private Task PreviousAsync()
@@ -374,6 +385,18 @@
 
             // 跳转到完成步骤
             currentStep = LoginStep.Done;
+
+            if (accountId != 0)
+            {
+                try
+                {
+                    await AccountService.ReleaseClientAsync(accountId);
+                }
+                catch
+                {
+                    // 忽略释放失败
+                }
+            }
         }
         catch (Exception ex)
         {