diff --git a/frontend/tests/unit/renderShell.smoke.test.tsx b/frontend/tests/unit/renderShell.smoke.test.tsx
new file mode 100644
index 0000000..04ea35e
--- /dev/null
+++ b/frontend/tests/unit/renderShell.smoke.test.tsx
@@ -0,0 +1,17 @@
+// REQ-USR-003: renderShell 共享渲染工具自带冒烟用例（T0）
+import { describe, it, expect } from 'vitest';
+import { screen } from '@testing-library/react';
+import { renderShell } from './renderShell';
+
+describe('renderShell', () => {
+  it('renderShell mounts a route element', () => {
+    renderShell(<div>shell-ok</div>, {
+      initialEntries: ['/'],
+      preloadedAuth: {
+        token: 't',
+        user: { id: 1, sUserName: '朱子纯', sUserType: '超级管理员', sLanguage: '中文' },
+      },
+    });
+    expect(screen.getByText('shell-ok')).toBeInTheDocument();
+  });
+});
diff --git a/frontend/tests/unit/renderShell.tsx b/frontend/tests/unit/renderShell.tsx
new file mode 100644
index 0000000..1a8ac40
--- /dev/null
+++ b/frontend/tests/unit/renderShell.tsx
@@ -0,0 +1,46 @@
+// REQ-USR-003: 外壳 / 路由测试共享渲染工具（Provider + 真实 store + MemoryRouter + AntD App）
+// 复用 FE-01 renderLogin.tsx 模式，扩展为可注入 auth 预置态（token/user）。
+import type { ReactElement } from 'react';
+import { render } from '@testing-library/react';
+import { Provider } from 'react-redux';
+import { MemoryRouter } from 'react-router-dom';
+import { App as AntdApp, ConfigProvider } from 'antd';
+import { configureStore } from '@reduxjs/toolkit';
+import authReducer, { type AuthState } from '../../src/store/slices/authSlice';
+import type { RootState } from '../../src/store/store';
+
+/** 构建带 auth slice 的测试 store，可注入 token/user 预置态 */
+export function makeShellStore(preloadedAuth?: Partial<AuthState>) {
+  return configureStore({
+    reducer: { auth: authReducer },
+    preloadedState: preloadedAuth
+      ? { auth: { token: null, user: null, ...preloadedAuth } }
+      : undefined,
+  });
+}
+
+export interface RenderShellOptions {
+  initialEntries?: string[];
+  preloadedAuth?: Partial<AuthState>;
+  store?: ReturnType<typeof makeShellStore>;
+}
+
+export function renderShell(ui: ReactElement, options?: RenderShellOptions) {
+  const store = options?.store ?? makeShellStore(options?.preloadedAuth);
+  const result = render(
+    <Provider store={store}>
+      <ConfigProvider>
+        <AntdApp>
+          <MemoryRouter initialEntries={options?.initialEntries ?? ['/']}>
+            {ui}
+          </MemoryRouter>
+        </AntdApp>
+      </ConfigProvider>
+    </Provider>,
+  );
+  return {
+    ...result,
+    store,
+    getState: () => store.getState() as RootState,
+  };
+}