diff --git a/src/api/mockUser.js b/src/api/mockUser.js
new file mode 100644
index 0000000..1af6e92
--- /dev/null
+++ b/src/api/mockUser.js
@@ -0,0 +1,30 @@
+import request from '@/utils/request'
+import {
+  DEFAULT_MOCK_USER,
+  MOCK_USER_HEADER,
+  MOCK_USER_STORAGE_KEY,
+  getStoredMockUser,
+  setStoredMockUser,
+} from '@/utils/mockUserStorage'
+
+function getResult(res) {
+  return res?.result
+}
+
+function isSuccessResponse(res) {
+  return String(res?.code || '') === '0000'
+}
+
+export function listMockUsers() {
+  return request({
+    url: '/mock/security/users',
+    method: 'get',
+  }).then((res) => (isSuccessResponse(res) ? getResult(res) || [] : []))
+}
+
+export function getCurrentMockUser() {
+  return request({
+    url: '/mock/security/current',
+    method: 'get',
+  }).then((res) => (isSuccessResponse(res) ? getResult(res) || null : null))
+}
diff --git a/src/layouts/ContractManageLayout.vue b/src/layouts/ContractManageLayout.vue
index d0be410..658b50f 100644
--- a/src/layouts/ContractManageLayout.vue
+++ b/src/layouts/ContractManageLayout.vue
@@ -35,6 +35,21 @@
 
       <div class="sider-footer">
         <a-button block @click="router.push('/')">返回首页</a-button>
+        <div class="mock-user-panel">
+          <div class="mock-user-label">测试用户切换</div>
+          <a-select
+            v-model:value="selectedMockUserKey"
+            class="mock-user-select"
+            :options="mockUserOptions"
+            :loading="mockUserLoading"
+            placeholder="请选择测试用户"
+            @change="handleMockUserChange"
+          />
+          <div v-if="currentMockUser" class="mock-user-meta">
+            {{ currentMockUser.systemType === 'manage' ? '管理端' : currentMockUser.systemType === 'business' ? '业务端' : '平台' }}
+            · {{ currentMockUser.orgName }}
+          </div>
+        </div>
       </div>
     </a-layout-sider>
 
@@ -53,8 +68,14 @@
 </template>
 
 <script setup>
-import { computed } from 'vue'
+import { computed, onMounted, ref } from 'vue'
 import { useRoute, useRouter } from 'vue-router'
+import { message } from 'ant-design-vue'
+import {
+  getCurrentMockUser,
+  listMockUsers,
+} from '@/api/mockUser'
+import { getStoredMockUser, setStoredMockUser } from '@/utils/mockUserStorage'
 import {
   FileDoneOutlined,
   FileTextOutlined,
@@ -65,6 +86,10 @@ import {
 
 const route = useRoute()
 const router = useRouter()
+const mockUserLoading = ref(false)
+const mockUserList = ref([])
+const currentMockUser = ref(null)
+const selectedMockUserKey = ref(getStoredMockUser())
 
 const selectedKey = computed(() => {
   if (route.path.startsWith('/contract-console/sign')) {
@@ -88,9 +113,49 @@ const selectedKey = computed(() => {
 
 const currentTitle = computed(() => route.meta?.title || '合同管理')
 
+const mockUserOptions = computed(() =>
+  mockUserList.value.map((item) => ({
+    label: `${item.displayName} (${item.orgId})`,
+    value: item.key,
+  })),
+)
+
 function handleMenuClick({ key }) {
   router.push(key)
 }
+
+async function loadMockUsers() {
+  mockUserLoading.value = true
+  try {
+    mockUserList.value = await listMockUsers()
+    const availableKeys = new Set(mockUserList.value.map((item) => item.key))
+    if (!availableKeys.has(selectedMockUserKey.value) && mockUserList.value.length > 0) {
+      selectedMockUserKey.value = mockUserList.value[0].key
+      setStoredMockUser(selectedMockUserKey.value)
+    }
+  } finally {
+    mockUserLoading.value = false
+  }
+}
+
+async function loadCurrentMockUser() {
+  currentMockUser.value = await getCurrentMockUser()
+  if (currentMockUser.value?.key) {
+    selectedMockUserKey.value = currentMockUser.value.key
+    setStoredMockUser(currentMockUser.value.key)
+  }
+}
+
+function handleMockUserChange(value) {
+  setStoredMockUser(value)
+  message.success('测试用户已切换，正在刷新页面数据')
+  window.location.reload()
+}
+
+onMounted(async () => {
+  await loadMockUsers()
+  await loadCurrentMockUser()
+})
 </script>
 
 <style scoped>
@@ -149,6 +214,33 @@ function handleMenuClick({ key }) {
   padding: 16px 20px 20px;
 }
 
+.mock-user-panel {
+  margin-bottom: 12px;
+  padding: 12px;
+  border-radius: 14px;
+  background: rgba(255, 255, 255, 0.78);
+  border: 1px solid rgba(37, 99, 235, 0.12);
+  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.04);
+}
+
+.mock-user-label {
+  font-size: 12px;
+  font-weight: 700;
+  color: #334155;
+  margin-bottom: 8px;
+}
+
+.mock-user-select {
+  width: 100%;
+}
+
+.mock-user-meta {
+  margin-top: 8px;
+  font-size: 12px;
+  line-height: 1.5;
+  color: #64748b;
+}
+
 .contract-header {
   height: auto;
   background: rgba(255, 255, 255, 0.96);
diff --git a/src/utils/mockUserStorage.js b/src/utils/mockUserStorage.js
new file mode 100644
index 0000000..7fe4a81
--- /dev/null
+++ b/src/utils/mockUserStorage.js
@@ -0,0 +1,15 @@
+export const MOCK_USER_STORAGE_KEY = 'stamp_mock_user'
+export const DEFAULT_MOCK_USER = 'admin'
+export const MOCK_USER_HEADER = 'X-Mock-User'
+
+export function getStoredMockUser() {
+  return localStorage.getItem(MOCK_USER_STORAGE_KEY) || DEFAULT_MOCK_USER
+}
+
+export function setStoredMockUser(userKey) {
+  if (!userKey) {
+    localStorage.removeItem(MOCK_USER_STORAGE_KEY)
+    return
+  }
+  localStorage.setItem(MOCK_USER_STORAGE_KEY, userKey)
+}
diff --git a/src/utils/request.js b/src/utils/request.js
index 27ccef8..11c82d0 100644
--- a/src/utils/request.js
+++ b/src/utils/request.js
@@ -1,4 +1,5 @@
 import axios from 'axios'
+import { DEFAULT_MOCK_USER, getStoredMockUser, MOCK_USER_HEADER } from '@/utils/mockUserStorage'
 import { message, Modal, notification } from 'ant-design-vue'
 
 const service = axios.create({
@@ -12,6 +13,8 @@ service.interceptors.request.use(
     if (token) {
       config.headers['Authorization'] = 'Bearer ' + token
     }
+    const mockUser = getStoredMockUser() || DEFAULT_MOCK_USER
+    config.headers[MOCK_USER_HEADER] = mockUser
     return config
   },
   (error) => Promise.reject(error),
diff --git a/vite.config.js b/vite.config.js
index 50814a2..f756097 100644
--- a/vite.config.js
+++ b/vite.config.js
@@ -35,6 +35,10 @@ export default defineConfig({
         target: 'http://127.0.0.1:8899',
         changeOrigin: true,
       },
+      '/mock': {
+        target: 'http://127.0.0.1:8899',
+        changeOrigin: true,
+      },
       '/trans': {
         target: 'http://127.0.0.1:8899',
         changeOrigin: true,