diff --git a/src/store/authSlice.ts b/src/store/authSlice.ts
index 8255f61..ce2b0b5 100644
--- a/src/store/authSlice.ts
+++ b/src/store/authSlice.ts
@@ -1,30 +1,39 @@
 import { createSlice, PayloadAction } from '@reduxjs/toolkit'
 import { storage } from '@/utils/storage'
+// import type 避免运行时循环依赖：store → api/auth → http/client → store
+import type { WxUserInfo } from '@/api/auth'
 
 interface State {
   token: string | null
   userId: string | null
+  userInfo: WxUserInfo | null // 登录返回的完整用户信息（spec D6）
 }
 
 const STORAGE_KEY = 'auth_token'
 
-const initialState: State = {
+// initialState 用惰性函数：保证 reducer(undefined) 时才读取 storage，
+// 使测试里 beforeEach 清空 mock 后再初始化能拿到正确的干净状态
+const initialState = (): State => ({
   token: storage.get<string>(STORAGE_KEY),
-  userId: null
-}
+  userId: null,
+  userInfo: null
+})
 
 const slice = createSlice({
   name: 'auth',
   initialState,
   reducers: {
-    setAuth(state, action: PayloadAction<{ token: string; userId: string }>) {
+    // token 落盘持久化；userInfo 只入内存，冷启动由后续接口拉取，避免缓存过期数据（spec D6）
+    setAuth(state, action: PayloadAction<{ token: string; userInfo: WxUserInfo }>) {
       state.token = action.payload.token
-      state.userId = action.payload.userId
+      state.userId = action.payload.userInfo.userId
+      state.userInfo = action.payload.userInfo
       storage.set(STORAGE_KEY, action.payload.token)
     },
     clearAuth(state) {
       state.token = null
       state.userId = null
+      state.userInfo = null
       storage.remove(STORAGE_KEY)
     }
   }
diff --git a/tests/unit/store/authSlice.spec.ts b/tests/unit/store/authSlice.spec.ts
new file mode 100644
index 0000000..bffb565
--- /dev/null
+++ b/tests/unit/store/authSlice.spec.ts
@@ -0,0 +1,57 @@
+import { describe, it, expect, beforeEach, vi } from 'vitest'
+
+// 内存 Map 模拟 Taro storage（同 tests/unit/family/family.spec.ts 模式）
+const mem = new Map<string, unknown>()
+vi.mock('@/utils/storage', () => ({
+  storage: {
+    get: <T>(key: string): T | null => (mem.has(key) ? (mem.get(key) as T) : null),
+    set: <T>(key: string, value: T): void => { mem.set(key, value) },
+    remove: (key: string): void => { mem.delete(key) }
+  }
+}))
+
+import reducer, { setAuth, clearAuth } from '@/store/authSlice'
+import type { WxUserInfo } from '@/api/auth'
+
+const userInfo: WxUserInfo = {
+  userId: 'u-100',
+  userType: 1,
+  avatar: 'https://example.com/a.png',
+  nickName: '张大爷',
+  mobile: '13800000000',
+  gender: 1,
+  region: '深圳市南山区',
+  loginFrom: 'miniapp'
+}
+
+beforeEach(() => {
+  mem.clear()
+})
+
+describe('authSlice', () => {
+  it('setAuth 写入 token/userId/userInfo，token 落盘', () => {
+    let state = reducer(undefined, { type: 'init' })
+    state = reducer(state, setAuth({ token: 'tk-1', userInfo }))
+    expect(state.token).toBe('tk-1')
+    expect(state.userId).toBe('u-100')
+    expect(state.userInfo).toEqual(userInfo)
+    expect(mem.get('auth_token')).toBe('tk-1')
+  })
+
+  it('setAuth 后 clearAuth 全部清空并移除持久化 token', () => {
+    let state = reducer(undefined, { type: 'init' })
+    state = reducer(state, setAuth({ token: 'tk-1', userInfo }))
+    state = reducer(state, clearAuth())
+    expect(state.token).toBeNull()
+    expect(state.userId).toBeNull()
+    expect(state.userInfo).toBeNull()
+    expect(mem.has('auth_token')).toBe(false)
+  })
+
+  it('初始态从 storage 恢复 token', () => {
+    mem.set('auth_token', 'tk-saved')
+    const state = reducer(undefined, { type: 'init' })
+    expect(state.token).toBe('tk-saved')
+    expect(state.userInfo).toBeNull()
+  })
+})