diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9f2a3ba4..aacecb0b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,7 @@
 
 ### 修复
 
+- 隐藏无应用更新权限用户头像菜单中的“检查更新”入口
 - 插件工具使用中文等非 ASCII 名称时 LLM 调用失败：主流 API 要求工具名匹配 `^[a-zA-Z0-9_-]{1,64}$`，现自动将非法名称转写为合法拼音名（`pypinyin` 缺失时退回下划线替换），冲突追加 `_2`/`_3` 后缀，并在工具描述前缀 `[原名: …]` 保留原名映射；`config_json.plugins` 配置键与插件内部仍使用原始名称，路由不受影响
 - 修复聊天页在"生成中"时于输入框持续打字导致消息列表上下轻微抖动的问题：输入框高度测量改为在离屏克隆节点上进行，不再瞬态改变页面布局
 
diff --git a/dashboard/src/components/AvatarDropdown.test.tsx b/dashboard/src/components/AvatarDropdown.test.tsx
new file mode 100644
index 00000000..5731f6d0
--- /dev/null
+++ b/dashboard/src/components/AvatarDropdown.test.tsx
@@ -0,0 +1,53 @@
+import { render, screen } from "@testing-library/react";
+import userEvent from "@testing-library/user-event";
+import { MemoryRouter } from "react-router-dom";
+import { describe, expect, it, vi } from "vitest";
+import type { OctopUser } from "../api/modules/auth";
+import { CurrentUserProvider } from "../hooks/useCurrentUser";
+import AvatarDropdown from "./AvatarDropdown";
+
+function buildUser(
+  role: OctopUser["role"],
+  permissions: string[] = [],
+): OctopUser {
+  return {
+    id: 1,
+    username: role,
+    role,
+    display_name: role === "admin" ? "Admin User" : "Regular User",
+    locale: "en",
+    permissions,
+  };
+}
+
+async function openAccountMenu(user: OctopUser) {
+  const pointer = userEvent.setup();
+  render(
+    <MemoryRouter>
+      <CurrentUserProvider user={user} setUser={vi.fn()}>
+        <AvatarDropdown user={user} placement="sidebar" />
+      </CurrentUserProvider>
+    </MemoryRouter>,
+  );
+
+  await pointer.click(
+    screen.getByRole("button", { name: new RegExp(user.display_name!) }),
+  );
+}
+
+describe("<AvatarDropdown /> update access", () => {
+  it("hides Check for updates from users without update permission", async () => {
+    await openAccountMenu(buildUser("user"));
+
+    expect(screen.queryByText("account.checkUpdates")).not.toBeInTheDocument();
+  });
+
+  it.each([
+    ["an admin", buildUser("admin")],
+    ["an explicitly authorized user", buildUser("user", ["update"])],
+  ])("shows Check for updates to %s", async (_label, user) => {
+    await openAccountMenu(user);
+
+    expect(await screen.findByText("account.checkUpdates")).toBeInTheDocument();
+  });
+});
diff --git a/dashboard/src/components/AvatarDropdown.tsx b/dashboard/src/components/AvatarDropdown.tsx
index c1095955..319f23ed 100644
--- a/dashboard/src/components/AvatarDropdown.tsx
+++ b/dashboard/src/components/AvatarDropdown.tsx
@@ -32,6 +32,7 @@ import { preferencesApi } from "../api/modules/preferences";
 import { clearAuthToken } from "../api/request";
 import { applyGuestLocale, applyUserLocale } from "../utils/locale";
 import { apiErrorMessage } from "../utils/apiError";
+import { userCan } from "../utils/permissions";
 import {
   MIN_PASSWORD_LENGTH,
   passwordPolicyIssue,
@@ -256,17 +257,19 @@ export default function AvatarDropdown({
         <span>{t("account.changePassword")}</span>
       </button>
 
-      <button
-        type="button"
-        className={styles.menuItem}
-        onClick={() => {
-          setMenuOpen(false);
-          navigate("/admin/advanced?tab=updates");
-        }}
-      >
-        <RefreshCw size={16} strokeWidth={1.8} />
-        <span>{t("account.checkUpdates")}</span>
-      </button>
+      {userCan(user, "update") && (
+        <button
+          type="button"
+          className={styles.menuItem}
+          onClick={() => {
+            setMenuOpen(false);
+            navigate("/admin/advanced?tab=updates");
+          }}
+        >
+          <RefreshCw size={16} strokeWidth={1.8} />
+          <span>{t("account.checkUpdates")}</span>
+        </button>
+      )}
 
       <Divider className={styles.menuDivider} />