diff --git a/ui-html/webview2/settings/ime-settings/src/modules/config-sync.ts b/ui-html/webview2/settings/ime-settings/src/modules/config-sync.ts
index 58e160e3..bbac086a 100644
--- a/ui-html/webview2/settings/ime-settings/src/modules/config-sync.ts
+++ b/ui-html/webview2/settings/ime-settings/src/modules/config-sync.ts
@@ -1,6 +1,6 @@
 import { applyCandidateArrange, applyDropdownValue, applyToggleState } from './shared';
 import { applyAppearanceConfig, updateCandidatePreviewHelpcode } from './appearance';
-import { applyFrequencyConfig, applyInputConfig, applyZhEnMixedInputConfig } from './input';
+import { applyFrequencyConfig, applyInputConfig, applyTencentTmtConfig, applyZhEnMixedInputConfig } from './input';
 import { applyVoiceConfig } from './voice';
 import { applyAiConfig } from './ai-settings';
 import { applyFloatingToolbarAppearanceConfig, applyFloatingToolbarItemsConfig } from './floating-toolbar';
@@ -121,8 +121,12 @@ export function setupConfigSync(): void {
       payload.data?.general?.cn_en_mixed_input,
       payload.data?.general?.cn_en_mixed_input_min_chars
     );
+    applyTencentTmtConfig(payload.data?.tencent_tmt);
     if (typeof payload.data?.general?.candidate_translations === 'boolean') {
       applyToggleState('candidateTranslationsToggleBtn', payload.data.general.candidate_translations);
+      document.getElementById('candidateTranslationApiOptions')?.classList.toggle(
+        'is-disabled', !payload.data.general.candidate_translations
+      );
     }
     if (typeof payload.data?.general?.emoji_mixed_input === 'boolean') {
       applyToggleState('emojiMixedInputToggleBtn', payload.data.general.emoji_mixed_input);
diff --git a/ui-html/webview2/settings/ime-settings/src/modules/input.ts b/ui-html/webview2/settings/ime-settings/src/modules/input.ts
index 25c25dac..595cbfa5 100644
--- a/ui-html/webview2/settings/ime-settings/src/modules/input.ts
+++ b/ui-html/webview2/settings/ime-settings/src/modules/input.ts
@@ -83,6 +83,26 @@ export function applyZhEnMixedInputConfig(enabled?: boolean, minChars?: number):
   }
 }
 
+function syncCandidateTranslationOptions(enabled: boolean): void {
+  document.getElementById('candidateTranslationApiOptions')?.classList.toggle('is-disabled', !enabled);
+}
+
+function syncCandidateTranslationWarning(): void {
+  const secretId = (document.getElementById('tencentTmtSecretId') as HTMLInputElement | null)?.value.trim();
+  const secretKey = (document.getElementById('tencentTmtSecretKey') as HTMLInputElement | null)?.value.trim();
+  document.getElementById('candidateTranslationApiWarning')?.classList.toggle(
+    'is-hidden', Boolean(secretId && secretKey)
+  );
+}
+
+export function applyTencentTmtConfig(config: Record<string, unknown> | undefined): void {
+  const secretId = document.getElementById('tencentTmtSecretId') as HTMLInputElement | null;
+  const secretKey = document.getElementById('tencentTmtSecretKey') as HTMLInputElement | null;
+  if (secretId && typeof config?.secret_id === 'string') secretId.value = config.secret_id;
+  if (secretKey && typeof config?.secret_key === 'string') secretKey.value = config.secret_key;
+  syncCandidateTranslationWarning();
+}
+
 export function setupInput(): void {
   document.querySelectorAll<HTMLInputElement>('input[name="input-mode"]').forEach((radio) => {
     radio.addEventListener('change', () => {
@@ -145,8 +165,32 @@ export function setupInput(): void {
     updateConfig('general.cn_en_mixed_input', active);
   });
   setupToggleButton('candidateTranslationsToggleBtn', (active) => {
+    syncCandidateTranslationOptions(active);
     updateConfig('general.candidate_translations', active);
   });
+  const translationFields: Record<string, string> = {
+    tencentTmtSecretId: 'tencent_tmt.secret_id',
+    tencentTmtSecretKey: 'tencent_tmt.secret_key'
+  };
+  Object.entries(translationFields).forEach(([id, path]) => {
+    const input = document.getElementById(id) as HTMLInputElement | null;
+    input?.addEventListener('change', () => {
+      input.value = input.value.trim();
+      updateConfig(path, input.value);
+      syncCandidateTranslationWarning();
+    });
+  });
+  const secretKey = document.getElementById('tencentTmtSecretKey') as HTMLInputElement | null;
+  const visibility = document.getElementById('tencentTmtSecretKeyVisibility') as HTMLButtonElement | null;
+  visibility?.addEventListener('click', () => {
+    if (!secretKey) return;
+    const show = secretKey.type === 'password';
+    secretKey.type = show ? 'text' : 'password';
+    visibility.setAttribute('aria-pressed', String(show));
+    const label = show ? '隐藏 SecretKey' : '显示 SecretKey';
+    visibility.setAttribute('aria-label', label);
+    visibility.title = label;
+  });
   setupDropdownMenu(
     'zhEnTriggerLengthBtn',
     'zhEnTriggerLengthMenu',
diff --git a/ui-html/webview2/settings/ime-settings/src/partials/input.html b/ui-html/webview2/settings/ime-settings/src/partials/input.html
index 910d1f2d..6decd806 100644
--- a/ui-html/webview2/settings/ime-settings/src/partials/input.html
+++ b/ui-html/webview2/settings/ime-settings/src/partials/input.html
@@ -125,6 +125,38 @@
         <div class="ftb-toggle-knob"></div>
       </div>
     </div>
+    <div class="translation-api-options" id="candidateTranslationApiOptions">
+      <div class="input-option-divider"></div>
+      <div class="translation-api-heading">
+        <div class="section-title">腾讯云 API 凭据</div>
+        <div class="input-setting-description">用于本地词库未命中时请求机器翻译，凭据仅保存在本机配置文件中</div>
+      </div>
+      <div class="translation-api-grid">
+        <label class="translation-api-field">
+          <span>SecretId</span>
+          <input id="tencentTmtSecretId" type="text" autocomplete="off" spellcheck="false" placeholder="AKID...">
+        </label>
+        <label class="translation-api-field">
+          <span>SecretKey</span>
+          <span class="translation-secret-input">
+            <input id="tencentTmtSecretKey" type="password" autocomplete="new-password" spellcheck="false" placeholder="SecretKey">
+            <button id="tencentTmtSecretKeyVisibility" class="translation-secret-toggle" type="button"
+              aria-label="显示 SecretKey" aria-pressed="false" title="显示 SecretKey">
+              <svg class="translation-secret-icon translation-secret-icon-show" viewBox="0 0 24 24" aria-hidden="true">
+                <path d="M2.5 12s3.5-6 9.5-6 9.5 6 9.5 6-3.5 6-9.5 6-9.5-6-9.5-6Z"></path>
+                <circle cx="12" cy="12" r="2.6"></circle>
+              </svg>
+              <svg class="translation-secret-icon translation-secret-icon-hide" viewBox="0 0 24 24" aria-hidden="true">
+                <path d="m3 3 18 18"></path>
+                <path d="M10.6 6.1A9.6 9.6 0 0 1 12 6c6 0 9.5 6 9.5 6a16 16 0 0 1-2.2 3"></path>
+                <path d="M6.2 6.3C3.8 8.1 2.5 12 2.5 12s3.5 6 9.5 6a9 9 0 0 0 3-.5"></path>
+              </svg>
+            </button>
+          </span>
+        </label>
+      </div>
+      <div class="translation-api-warning" id="candidateTranslationApiWarning" role="status">请填写 SecretId 和 SecretKey 后使用云端翻译</div>
+    </div>
   </div>
 
   <div class="section">
diff --git a/ui-html/webview2/settings/ime-settings/src/styles/modules/input.css b/ui-html/webview2/settings/ime-settings/src/styles/modules/input.css
index 51179b64..1b404b7d 100644
--- a/ui-html/webview2/settings/ime-settings/src/styles/modules/input.css
+++ b/ui-html/webview2/settings/ime-settings/src/styles/modules/input.css
@@ -45,6 +45,123 @@
   margin-top: 5px;
 }
 
+.translation-api-options {
+  margin-top: 8px;
+}
+
+.translation-api-options.is-disabled {
+  opacity: 0.45;
+}
+
+.translation-api-options.is-disabled .translation-api-grid {
+  pointer-events: none;
+}
+
+.translation-api-heading {
+  padding-top: 14px;
+}
+
+.translation-api-grid {
+  display: grid;
+  grid-template-columns: 1fr 1fr;
+  gap: 16px;
+  margin-top: 14px;
+}
+
+.translation-api-field {
+  display: flex;
+  flex-direction: column;
+  gap: 7px;
+  color: var(--text-secondary);
+  font-size: 12px;
+  font-weight: 500;
+}
+
+.translation-api-field input {
+  box-sizing: border-box;
+  width: 100%;
+  padding: 10px 12px;
+  color: var(--text-color);
+  background: var(--surface-sunken);
+  border: 1px solid var(--control-border);
+  border-radius: 6px;
+  outline: none;
+  font: 13px Consolas, "Cascadia Mono", monospace;
+}
+
+.translation-api-field input:focus {
+  border-color: var(--accent-color);
+  background: var(--control-bg);
+  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent-color) 20%, transparent);
+}
+
+.translation-secret-input {
+  position: relative;
+  display: block;
+}
+
+.translation-secret-input input {
+  padding-right: 42px;
+}
+
+.translation-secret-input input::-ms-reveal,
+.translation-secret-input input::-ms-clear {
+  display: none;
+}
+
+.translation-secret-toggle {
+  position: absolute;
+  top: 50%;
+  right: 5px;
+  display: grid;
+  width: 32px;
+  height: 32px;
+  padding: 0;
+  color: var(--text-muted);
+  background: transparent;
+  border: 0;
+  border-radius: 5px;
+  outline: none;
+  cursor: pointer;
+  place-items: center;
+  transform: translateY(-50%);
+}
+
+.translation-secret-toggle:hover {
+  color: var(--text-color);
+  background: color-mix(in srgb, var(--text-color) 8%, transparent);
+}
+
+.translation-secret-icon {
+  grid-area: 1 / 1;
+  width: 18px;
+  height: 18px;
+  fill: none;
+  stroke: currentColor;
+  stroke-linecap: round;
+  stroke-linejoin: round;
+  stroke-width: 1.7;
+}
+
+.translation-secret-icon-hide,
+.translation-secret-toggle[aria-pressed="true"] .translation-secret-icon-show {
+  display: none;
+}
+
+.translation-secret-toggle[aria-pressed="true"] .translation-secret-icon-hide {
+  display: block;
+}
+
+.translation-api-warning {
+  margin-top: 10px;
+  color: #d7a64a;
+  font-size: 12px;
+}
+
+.translation-api-warning.is-hidden {
+  display: none;
+}
+
 /* 输入 -> 双拼方案 */
 .shuangpin-option-content {
   display: flex;