diff --git a/src/renderer/components/tools-modal.ts b/src/renderer/components/tools-modal.ts
index 7e4045a..511b818 100644
--- a/src/renderer/components/tools-modal.ts
+++ b/src/renderer/components/tools-modal.ts
@@ -21,16 +21,6 @@ export function initToolsModal(): void {
     if (e.target === modalEl) closeToolsModal();
   });
 
-  // Tool Calling 始终开启，不可关闭
-  const toggleToolCalling = modalEl.querySelector('#toggleToolCalling') as HTMLInputElement;
-  if (toggleToolCalling) {
-    toggleToolCalling.checked = true;
-    toggleToolCalling.disabled = true;
-    state.set('toolCallingEnabled', true);
-    const db = state.get<ChatDB | null>(KEYS.DB);
-    if (db) db.saveSetting('toolCallingEnabled', true);
-  }
-
   // run_command 模式下拉框
   const selectMode = modalEl.querySelector('#selectRunCommandMode') as HTMLSelectElement;
   if (selectMode) {
@@ -63,13 +53,6 @@ function updateRunCommandBadge(mode: string): void {
 }
 
 export function openToolsModal(): void {
-  // 同步开关状态 — 始终开启
-  const toggleTC = modalEl.querySelector('#toggleToolCalling') as HTMLInputElement;
-  if (toggleTC) {
-    toggleTC.checked = true;
-    toggleTC.disabled = true;
-  }
-
   const runCommandMode = state.get<string>('runCommandMode', 'confirm');
   const selectMode = modalEl.querySelector('#selectRunCommandMode') as HTMLSelectElement;
   if (selectMode) selectMode.value = runCommandMode;
diff --git a/src/renderer/index.html b/src/renderer/index.html
index c6fa438..d30267a 100644
--- a/src/renderer/index.html
+++ b/src/renderer/index.html
@@ -441,15 +441,7 @@
             </button>
         </div>
         <div class="modal-body">
-            <div style="display:flex;align-items:center;gap:10px;margin-bottom:12px;padding:8px 12px;background:var(--bg-layer);border-radius:var(--radius-control);border:1px solid var(--border-subtle);">
-                <span style="font-size:13px;font-weight:600;">工具调用（始终开启）</span>
-                <label class="toggle-label" style="margin:0;">
-                    <input type="checkbox" id="toggleToolCalling">
-                    <span class="toggle-slider"></span>
-                </label>
-                <span class="text-muted" style="font-size:11px;margin-left:auto;">始终开启，所有对话均通过 Agent Loop</span>
-            </div>
-            <p class="text-muted" style="font-size:12px;margin-bottom:12px;">启用后，AI 可在对话中自主调用以下工具。高风险操作需用户确认。系统关键路径自动屏蔽。</p>
+            <p class="text-muted" style="font-size:12px;margin-bottom:12px;">AI 始终可在对话中自主调用以下工具（Tool Calling 永久开启）。高风险操作需用户确认。</p>
             <div class="tools-grid">
                 <div class="tool-card">
                     <div class="tool-card-header"><span class="tool-card-icon">📄</span><span class="tool-card-name">read_file</span><span class="tool-card-badge auto">自动</span></div>
diff --git a/src/renderer/main.ts b/src/renderer/main.ts
index df6c69d..60b7c21 100644
--- a/src/renderer/main.ts
+++ b/src/renderer/main.ts
@@ -394,14 +394,11 @@ async function init(): Promise<void> {
     (document.querySelector('#inputMCPTimeout') as HTMLInputElement).value = mcpTimeout >= 0 ? String(mcpTimeout) : '';
     logInit(`超时设置: HTTP=${httpTimeout>=0?httpTimeout:30}s 流式=${streamTimeout>=0?streamTimeout:300}s MCP=${mcpTimeout>=0?mcpTimeout:60}s`);
 
-    // ── Tool Calling 设置 ──
-    const toolCallingEnabled = await db.getSetting('toolCallingEnabled', true);
+    // ── Tool Calling 设置（永久开启，不可关闭）──
+    state.set('toolCallingEnabled', true);
     const runCommandMode = await db.getSetting('runCommandMode', 'confirm') as 'auto' | 'confirm' | 'disabled';
-    state.set('toolCallingEnabled', toolCallingEnabled);
     state.set('runCommandMode', runCommandMode);
     setRunCommandMode(runCommandMode);
-    const toggleTC = document.querySelector<HTMLInputElement>('#toggleToolCalling');
-    if (toggleTC) toggleTC.checked = toolCallingEnabled;
 
     // ── MCP 工具注册 ──
     await startAllMCPServers();