diff --git a/src/app/me/master-agent/takeover/page.tsx b/src/app/me/master-agent/takeover/page.tsx
new file mode 100644
index 0000000..2b77ba5
--- /dev/null
+++ b/src/app/me/master-agent/takeover/page.tsx
@@ -0,0 +1,29 @@
+import { AppShell, PageNav, StatusBar } from "@/components/app-ui";
+import { MasterAgentTakeoverClient } from "@/components/master-agent-takeover-client";
+import { requirePageSession } from "@/lib/boss-auth";
+import { getProjectAgentControls } from "@/lib/boss-data";
+import { formatTimestampLabel } from "@/lib/boss-projections";
+
+export const dynamic = "force-dynamic";
+
+export default async function MasterAgentTakeoverPage() {
+  const session = await requirePageSession();
+  const projectControls = await getProjectAgentControls("master-agent", session.account);
+
+  return (
+    <AppShell bottomNav={false}>
+      <StatusBar />
+      <PageNav title="全局接管" backHref="/conversations/master-agent" />
+      <div className="px-[18px] pb-3">
+        <div className="rounded-2xl border border-[#E5E5EA] bg-white px-4 py-4 text-[13px] leading-6 text-[#57606A]">
+          全局接管单独放在这里，不再混进提示词设置。当前登录账号：
+          <span className="font-semibold text-[#111111]">{session.account}</span>
+        </div>
+      </div>
+      <MasterAgentTakeoverClient
+        enabled={projectControls?.globalTakeoverEnabled ?? false}
+        updatedAt={projectControls?.updatedAt ? formatTimestampLabel(projectControls.updatedAt) : null}
+      />
+    </AppShell>
+  );
+}
diff --git a/src/components/master-agent-takeover-client.tsx b/src/components/master-agent-takeover-client.tsx
new file mode 100644
index 0000000..99abf24
--- /dev/null
+++ b/src/components/master-agent-takeover-client.tsx
@@ -0,0 +1,84 @@
+"use client";
+
+import { useState } from "react";
+import { useRouter } from "next/navigation";
+
+type Props = {
+  enabled: boolean;
+  updatedAt?: string | null;
+};
+
+export function MasterAgentTakeoverClient({ enabled, updatedAt }: Props) {
+  const router = useRouter();
+  const [takeoverEnabled, setTakeoverEnabled] = useState(enabled);
+  const [busy, setBusy] = useState(false);
+  const [message, setMessage] = useState("");
+
+  async function save() {
+    setBusy(true);
+    setMessage("");
+
+    const response = await fetch("/api/v1/projects/master-agent/agent-controls", {
+      method: "POST",
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify({ globalTakeoverEnabled: takeoverEnabled }),
+    });
+    const result = (await response.json()) as { ok: boolean; message?: string };
+
+    setBusy(false);
+    setMessage(
+      result.ok
+        ? takeoverEnabled
+          ? "已开启全局主 Agent 协同接管。"
+          : "已关闭全局主 Agent 协同接管。"
+        : result.message ?? "保存失败。",
+    );
+
+    if (result.ok) {
+      router.refresh();
+    }
+  }
+
+  return (
+    <div className="flex flex-col gap-4 px-[18px] pb-6">
+      <div className="rounded-2xl border border-[#E5E5EA] bg-white px-4 py-4">
+        <div className="flex items-start justify-between gap-4">
+          <div className="space-y-2">
+            <div className="text-[16px] font-semibold text-[#111111]">全局主 Agent 协同接管</div>
+            <div className="text-[12px] leading-6 text-[#8C8C8C]">
+              这是全局默认开关。开启后，新线程默认允许主 Agent 协同推进，但不会抢走你继续直接控制线程开发的能力。
+            </div>
+            <div className="text-[12px] leading-6 text-[#8C8C8C]">
+              某个线程如果单独关闭了协同接管，会优先按线程自己的开关处理。
+            </div>
+          </div>
+          <label className="inline-flex shrink-0 items-center gap-2 rounded-full bg-[#F7F8FA] px-3 py-2 text-[13px] font-semibold text-[#111111]">
+            <input
+              type="checkbox"
+              checked={takeoverEnabled}
+              onChange={(event) => setTakeoverEnabled(event.target.checked)}
+              className="h-4 w-4 accent-[#07C160]"
+            />
+            开启
+          </label>
+        </div>
+        <div className="mt-4 flex flex-wrap items-center gap-3">
+          <button
+            type="button"
+            onClick={() => void save()}
+            disabled={busy}
+            className="rounded-full bg-[#07C160] px-4 py-2 text-[13px] font-semibold text-white disabled:opacity-60"
+          >
+            {busy ? "保存中" : "保存全局接管"}
+          </button>
+          {updatedAt ? <span className="text-[12px] text-[#8C8C8C]">最近更新：{updatedAt}</span> : null}
+        </div>
+      </div>
+      {message ? (
+        <div className="rounded-2xl border border-[#E5E5EA] bg-white px-4 py-3 text-[13px] text-[#57606A]">
+          {message}
+        </div>
+      ) : null}
+    </div>
+  );
+}
diff --git a/src/lib/master-agent-chat-menu.ts b/src/lib/master-agent-chat-menu.ts
index d513b6a..5eec85f 100644
--- a/src/lib/master-agent-chat-menu.ts
+++ b/src/lib/master-agent-chat-menu.ts
@@ -5,10 +5,12 @@ export const MASTER_AGENT_CHAT_PAGE_ANCHORS = {
   memory: "/me/master-agent#memory-section",
 } as const;
 
+export const MASTER_AGENT_TAKEOVER_PAGE_HREF = "/me/master-agent/takeover";
+
 export type MasterAgentChatPageAnchors = typeof MASTER_AGENT_CHAT_PAGE_ANCHORS;
 
 export type MasterAgentChatMenuItem = {
-  key: "prompt" | "model" | "reasoning_effort" | "memory" | "refresh";
+  key: "prompt" | "model" | "reasoning_effort" | "takeover" | "memory" | "refresh";
   label: string;
   href?: string;
   action?: "refresh";
@@ -20,11 +22,6 @@ export function getMasterAgentChatMenuItems(projectId: string): MasterAgentChatM
   }
 
   return [
-    {
-      key: "prompt",
-      label: "提示词",
-      href: MASTER_AGENT_CHAT_PAGE_ANCHORS.prompt,
-    },
     {
       key: "model",
       label: "模型",
@@ -35,6 +32,16 @@ export function getMasterAgentChatMenuItems(projectId: string): MasterAgentChatM
       label: "推理强度",
       href: MASTER_AGENT_CHAT_PAGE_ANCHORS.reasoningEffort,
     },
+    {
+      key: "takeover",
+      label: "全局接管",
+      href: MASTER_AGENT_TAKEOVER_PAGE_HREF,
+    },
+    {
+      key: "prompt",
+      label: "提示词",
+      href: MASTER_AGENT_CHAT_PAGE_ANCHORS.prompt,
+    },
     {
       key: "memory",
       label: "记忆",
diff --git a/tests/master-agent-chat-menu.test.ts b/tests/master-agent-chat-menu.test.ts
index 342837a..c0145e8 100644
--- a/tests/master-agent-chat-menu.test.ts
+++ b/tests/master-agent-chat-menu.test.ts
@@ -2,17 +2,18 @@ import test from "node:test";
 import assert from "node:assert/strict";
 import { getMasterAgentChatMenuItems } from "../src/lib/master-agent-chat-menu";
 
-test("master-agent 聊天页菜单包含提示词、模型、推理强度、记忆和刷新", () => {
+test("master-agent 聊天页菜单包含全局接管、提示词、模型、推理强度、记忆和刷新", () => {
   const items = getMasterAgentChatMenuItems("master-agent");
   assert.deepEqual(
     items.map((item) => item.key),
-    ["prompt", "model", "reasoning_effort", "memory", "refresh"],
+    ["model", "reasoning_effort", "takeover", "prompt", "memory", "refresh"],
   );
-  assert.equal(items[0]?.href, "/me/master-agent#prompt-section");
-  assert.equal(items[1]?.href, "/me/master-agent#model-section");
-  assert.equal(items[2]?.href, "/me/master-agent#reasoning-effort-section");
-  assert.equal(items[3]?.href, "/me/master-agent#memory-section");
-  assert.equal(items[4]?.action, "refresh");
+  assert.equal(items[0]?.href, "/me/master-agent#model-section");
+  assert.equal(items[1]?.href, "/me/master-agent#reasoning-effort-section");
+  assert.equal(items[2]?.href, "/me/master-agent/takeover");
+  assert.equal(items[3]?.href, "/me/master-agent#prompt-section");
+  assert.equal(items[4]?.href, "/me/master-agent#memory-section");
+  assert.equal(items[5]?.action, "refresh");
 });
 
 test("普通会话不返回主 Agent 专属菜单", () => {