diff --git a/apps/jingrow/frontend/src/app/layouts/AppHeader.vue b/apps/jingrow/frontend/src/app/layouts/AppHeader.vue
index aff8fb9..c90b2cb 100644
--- a/apps/jingrow/frontend/src/app/layouts/AppHeader.vue
+++ b/apps/jingrow/frontend/src/app/layouts/AppHeader.vue
@@ -52,39 +52,23 @@
         </n-button>
 
         <!-- 用户菜单 -->
-        <n-dropdown
-          trigger="click"
-          :options="userMenuOptions"
-          @select="handleUserMenuSelect"
-        >
-          <n-button quaternary>
-            <n-avatar
-              round
-              size="small"
-              :src="user?.avatar"
-            >
-              {{ user?.username?.charAt(0).toUpperCase() }}
-            </n-avatar>
-            <span class="username">{{ user?.username }}</span>
-            <Icon icon="tabler:chevron-down" />
-          </n-button>
-        </n-dropdown>
+        <UserMenu />
       </n-space>
     </div>
   </div>
 </template>
 
 <script setup lang="ts">
-import { computed, h, ref } from 'vue'
+import { computed, ref } from 'vue'
 import { useRouter, useRoute } from 'vue-router'
-import { NButton, NBreadcrumb, NBreadcrumbItem, NSpace, NDropdown, NAvatar, NInput, useMessage } from 'naive-ui'
+import { NButton, NBreadcrumb, NBreadcrumbItem, NSpace, NInput } from 'naive-ui'
 import { Icon } from '@iconify/vue'
 import { useAuthStore } from '../../shared/stores/auth'
 import { t } from '../../shared/i18n'
+import UserMenu from '../../shared/components/UserMenu.vue'
 
 const router = useRouter()
 const route = useRoute()
-const message = useMessage()
 const authStore = useAuthStore()
 
 // 搜索相关状态
@@ -93,7 +77,6 @@ const searchQuery = ref('')
 // 从 localStorage 读取应用名称
 const appName = computed(() => localStorage.getItem('appName') || 'Jingrow')
 
-const user = computed(() => authStore.user)
 const isSystemUser = computed(() => authStore.user?.user_type === 'System User')
 
 const breadcrumbItems = computed(() => {
@@ -148,43 +131,6 @@ const breadcrumbItems = computed(() => {
   return items
 })
 
-const userMenuOptions = computed(() => {
-  const options: any[] = [
-    // 菜单管理和设置对所有用户可见
-    {
-      label: t('Menu Management'),
-      key: 'menu-manager',
-      icon: () => h(Icon, { icon: 'tabler:menu-2' })
-    },
-    {
-      label: t('Settings'),
-      key: 'settings',
-      icon: () => h(Icon, { icon: 'tabler:settings' })
-    },
-    {
-      type: 'divider'
-    },
-    {
-      label: t('Logout'),
-      key: 'logout',
-      icon: () => h(Icon, { icon: 'tabler:logout' })
-    }
-  ]
-  
-  return options
-})
-
-const handleUserMenuSelect = async (key: string) => {
-  if (key === 'logout') {
-    await authStore.logout()
-    message.success(t('Logged out'))
-    router.push('/login')
-  } else if (key === 'menu-manager') {
-    router.push({ name: 'MenuManager' })
-  } else if (key === 'settings') {
-    router.push({ name: 'Settings' })
-  }
-}
 
 // 搜索处理函数
 const handleSearch = () => {
@@ -224,10 +170,6 @@ const handleSearchClear = () => {
   min-width: 0; /* 允许flex子项收缩 */
 }
 
-.username {
-  margin-left: 8px;
-  font-weight: 500;
-}
 
 /* 搜索框响应式样式 */
 .search-input {
diff --git a/apps/jingrow/frontend/src/shared/components/UserMenu.vue b/apps/jingrow/frontend/src/shared/components/UserMenu.vue
new file mode 100644
index 0000000..58e306b
--- /dev/null
+++ b/apps/jingrow/frontend/src/shared/components/UserMenu.vue
@@ -0,0 +1,86 @@
+<template>
+  <n-dropdown
+    trigger="click"
+    :options="userMenuOptions"
+    @select="handleUserMenuSelect"
+  >
+    <n-button quaternary>
+      <n-avatar
+        round
+        size="small"
+        :src="user?.avatar"
+      >
+        {{ user?.username?.charAt(0).toUpperCase() }}
+      </n-avatar>
+      <span class="username">{{ user?.username }}</span>
+      <Icon icon="tabler:chevron-down" />
+    </n-button>
+  </n-dropdown>
+</template>
+
+<script setup lang="ts">
+import { computed, h } from 'vue'
+import { useRouter } from 'vue-router'
+import { NButton, NDropdown, NAvatar, useMessage } from 'naive-ui'
+import { Icon } from '@iconify/vue'
+import { useAuthStore } from '../stores/auth'
+import { t } from '../i18n'
+
+const router = useRouter()
+const message = useMessage()
+const authStore = useAuthStore()
+
+const user = computed(() => authStore.user)
+
+const userMenuOptions = computed(() => {
+  const options: any[] = [
+    {
+      label: t('Menu Management'),
+      key: 'menu-manager',
+      icon: () => h(Icon, { icon: 'tabler:menu-2' })
+    },
+    {
+      label: t('Settings'),
+      key: 'settings',
+      icon: () => h(Icon, { icon: 'tabler:settings' })
+    },
+    {
+      type: 'divider'
+    },
+    {
+      label: t('Logout'),
+      key: 'logout',
+      icon: () => h(Icon, { icon: 'tabler:logout' })
+    }
+  ]
+  
+  return options
+})
+
+const handleUserMenuSelect = async (key: string) => {
+  if (key === 'logout') {
+    await authStore.logout()
+    message.success(t('Logged out'))
+    router.push('/')
+  } else if (key === 'menu-manager') {
+    router.push({ name: 'MenuManager' })
+  } else if (key === 'settings') {
+    router.push({ name: 'Settings' })
+  }
+}
+</script>
+
+<style scoped>
+.username {
+  margin-left: 8px;
+  font-weight: 500;
+}
+
+/* 移动端隐藏用户名文字 */
+@media (max-width: 768px) {
+  .username {
+    display: none;
+  }
+}
+</style>
+
diff --git a/apps/jingrow/frontend/src/views/HomePage.vue b/apps/jingrow/frontend/src/views/HomePage.vue
index 2d3fab9..9aa80c1 100644
--- a/apps/jingrow/frontend/src/views/HomePage.vue
+++ b/apps/jingrow/frontend/src/views/HomePage.vue
@@ -1,19 +1,193 @@
 <script setup lang="ts">
-import { computed, ref, watch, onMounted, onUnmounted, nextTick } from 'vue'
-import { useRouter } from 'vue-router'
-import { NButton, NSpace, useMessage } from 'naive-ui'
+import { computed, ref, watch, onMounted, onUnmounted, nextTick, reactive } from 'vue'
+import { NButton, NSpace, useMessage, NModal, NForm, NFormItem, NInput, NText } from 'naive-ui'
+import { Icon } from '@iconify/vue'
 import { useSEO } from '@/shared/composables/useSEO'
 import { t } from '@/shared/i18n'
+import { useAuthStore } from '@/shared/stores/auth'
+import { signupApi } from '@/shared/api/auth'
+import UserMenu from '@/shared/components/UserMenu.vue'
 import axios from 'axios'
 
-const router = useRouter()
 const message = useMessage()
+const authStore = useAuthStore()
 const appName = computed(() => localStorage.getItem('appName') || 'Jingrow')
 const currentYear = computed(() => new Date().getFullYear())
 const logoUrl = computed(() => '/logo.svg')
 
-const handleLogin = () => router.push('/login')
-const handleSignup = () => router.push('/signup')
+// 登录/注册弹窗状态
+const showLoginModal = ref(false)
+const showSignupModal = ref(false)
+const loginFormRef = ref()
+const signupFormRef = ref()
+const loginLoading = ref(false)
+const signupLoading = ref(false)
+const showSignupLink = ref(false)
+
+// 登录表单
+const loginFormData = reactive({
+  username: '',
+  password: ''
+})
+
+const loginRules = {
+  username: [
+    { required: true, message: t('Please enter username'), trigger: 'blur' }
+  ],
+  password: [
+    { required: true, message: t('Please enter password'), trigger: 'blur' },
+    { min: 6, message: t('Password must be at least 6 characters'), trigger: 'blur' }
+  ]
+}
+
+// 注册表单
+const signupFormData = reactive({
+  username: '',
+  password: '',
+  confirmPassword: '',
+  email: '',
+  phoneNumber: ''
+})
+
+const validatePasswordMatch = (_rule: any, value: string) => {
+  if (value !== signupFormData.password) {
+    return new Error(t('Passwords do not match'))
+  }
+  return true
+}
+
+const signupRules = {
+  username: [
+    { required: true, message: t('Please enter username'), trigger: 'blur' },
+    { min: 3, message: t('Username must be at least 3 characters'), trigger: 'blur' }
+  ],
+  password: [
+    { required: true, message: t('Please enter password'), trigger: 'blur' },
+    { min: 6, message: t('Password must be at least 6 characters'), trigger: 'blur' }
+  ],
+  confirmPassword: [
+    { required: true, message: t('Please confirm password'), trigger: 'blur' },
+    { validator: validatePasswordMatch, trigger: 'blur' }
+  ],
+  email: [
+    {
+      validator: (_rule: any, value: string) => {
+        if (!value) return true
+        const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/
+        if (!emailRegex.test(value)) {
+          return new Error(t('Please enter a valid email address'))
+        }
+        return true
+      },
+      trigger: 'blur'
+    }
+  ],
+  phoneNumber: [
+    { required: true, message: t('Please enter phone number'), trigger: 'blur' },
+    {
+      pattern: /^1[3-9]\d{9}$/,
+      message: t('Please enter a valid phone number'),
+      trigger: 'blur'
+    }
+  ]
+}
+
+const handleLogin = () => {
+  showLoginModal.value = true
+}
+
+const handleSignup = () => {
+  showSignupModal.value = true
+}
+
+const handleLoginSubmit = async () => {
+  try {
+    await loginFormRef.value?.validate()
+    loginLoading.value = true
+
+    const result = await authStore.login(loginFormData.username, loginFormData.password)
+    
+    if (result.success) {
+      message.success(t('Login successful'))
+      showLoginModal.value = false
+      loginFormData.username = ''
+      loginFormData.password = ''
+    } else {
+      message.error(result.error || t('Login failed'))
+    }
+  } catch (error) {
+    console.error('Login error:', error)
+    message.error(t('Login failed, please check username and password'))
+  } finally {
+    loginLoading.value = false
+  }
+}
+
+const handleSignupSubmit = async () => {
+  try {
+    await signupFormRef.value?.validate()
+    signupLoading.value = true
+
+    const result = await signupApi({
+      username: signupFormData.username,
+      password: signupFormData.password,
+      email: signupFormData.email || undefined,
+      phone_number: signupFormData.phoneNumber
+    })
+    
+    if (result.success) {
+      message.success(t('Sign up successful'))
+      if (result.user) {
+        authStore.user = result.user
+        authStore.isAuthenticated = true
+        localStorage.setItem('jingrow_user', JSON.stringify(result.user))
+        localStorage.setItem('jingrow_authenticated', 'true')
+        showSignupModal.value = false
+        signupFormData.username = ''
+        signupFormData.password = ''
+        signupFormData.confirmPassword = ''
+        signupFormData.email = ''
+        signupFormData.phoneNumber = ''
+      } else {
+        const loginResult = await authStore.login(signupFormData.username, signupFormData.password)
+        if (loginResult.success) {
+          showSignupModal.value = false
+          signupFormData.username = ''
+          signupFormData.password = ''
+          signupFormData.confirmPassword = ''
+          signupFormData.email = ''
+          signupFormData.phoneNumber = ''
+        } else {
+          message.warning(loginResult.error || t('注册成功，但自动登录失败，请手动登录'))
+          showSignupModal.value = false
+          showLoginModal.value = true
+        }
+      }
+    } else {
+      const errorMsg = result.error || t('Sign up failed')
+      console.error('注册失败:', errorMsg, result)
+      message.error(errorMsg)
+    }
+  } catch (error: any) {
+    console.error('注册异常:', error)
+    message.error(error.message || t('Sign up failed, please try again'))
+  } finally {
+    signupLoading.value = false
+  }
+}
+
+const switchToSignup = () => {
+  showLoginModal.value = false
+  showSignupModal.value = true
+}
+
+const switchToLogin = () => {
+  showSignupModal.value = false
+  showLoginModal.value = true
+}
+
+// 登录状态
+const isLoggedIn = computed(() => authStore.isLoggedIn)
 
 useSEO({
   title: t('Remove Background - Free AI Background Removal Tool'),
@@ -30,6 +204,8 @@ interface HistoryItem {
 }
 
 const fileInputRef = ref<HTMLInputElement | null>(null)
+// urlInputRef 在模板中使用，lint 警告是误报
+// eslint-disable-next-line @typescript-eslint/no-unused-vars
 const urlInputRef = ref<HTMLInputElement | null>(null)
 const uploadedImage = ref<File | null>(null)
 const uploadedImageUrl = ref<string>('')
@@ -497,9 +673,25 @@ const removeHistoryItem = (index: number) => {
   }
 }
 
-onMounted(() => {
+onMounted(async () => {
   window.addEventListener('resize', handleResize)
   window.addEventListener('paste', handlePaste)
+  
+  // 初始化认证状态
+  await authStore.initAuth()
+  
+  // 检查服务器配置，判断是否显示注册链接
+  try {
+    const response = await fetch('/jingrow/server-config')
+    if (response.ok) {
+      const data = await response.json()
+      if (data.success && data.jingrow_server_url === 'https://cloud.jingrow.com') {
+        showSignupLink.value = true
+      }
+    }
+  } catch (error) {
+    console.error('Failed to get server config:', error)
+  }
 })
 
 onUnmounted(() => {
@@ -524,8 +716,20 @@ onUnmounted(() => {
         </div>
         <div class="header-right">
           <n-space :size="12">
-            <n-button quaternary @click="handleSignup">注册</n-button>
-            <n-button type="primary" @click="handleLogin" class="login-btn">登录</n-button>
+            <!-- 未登录状态：显示登录/注册按钮 -->
+            <template v-if="!isLoggedIn">
+              <n-button quaternary @click="handleSignup">注册</n-button>
+              <n-button type="primary" @click="handleLogin" class="login-btn">登录</n-button>
+            </template>
+            <!-- 已登录状态：显示通知和用户菜单 -->
+            <template v-else>
+              <n-button quaternary circle>
+                <template #icon>
+                  <Icon icon="tabler:bell" />
+                </template>
+              </n-button>
+              <UserMenu />
+            </template>
           </n-space>
         </div>
       </div>
@@ -711,6 +915,182 @@ onUnmounted(() => {
         </div>
       </div>
     </footer>
+
+    <!-- 登录弹窗 -->
+    <n-modal
+      v-model:show="showLoginModal"
+      preset="card"
+      :title="appName"
+      size="large"
+      :bordered="false"
+      :mask-closable="true"
+      style="max-width: 500px;"
+      class="auth-modal"
+    >
+      <n-form
+        ref="loginFormRef"
+        :model="loginFormData"
+        :rules="loginRules"
+        size="medium"
+        :show-label="false"
+        @keyup.enter="handleLoginSubmit"
+      >
+        <n-form-item path="username">
+          <n-input
+            v-model:value="loginFormData.username"
+            :placeholder="t('Username')"
+            :input-props="{ autocomplete: 'username' }"
+          >
+            <template #prefix>
+              <Icon icon="tabler:user" />
+            </template>
+          </n-input>
+        </n-form-item>
+
+        <n-form-item path="password">
+          <n-input
+            v-model:value="loginFormData.password"
+            type="password"
+            :placeholder="t('Password')"
+            :input-props="{ autocomplete: 'current-password' }"
+            show-password-on="click"
+          >
+            <template #prefix>
+              <Icon icon="tabler:lock" />
+            </template>
+          </n-input>
+        </n-form-item>
+
+        <n-form-item>
+          <n-button
+            type="primary"
+            size="large"
+            block
+            :loading="loginLoading"
+            @click="handleLoginSubmit"
+            class="brand-button"
+          >
+            {{ t('Login') }}
+          </n-button>
+        </n-form-item>
+      </n-form>
+
+      <div class="auth-footer" v-if="showSignupLink">
+        <n-text depth="3">
+          {{ t("Don't have an account?") }}
+          <a href="javascript:void(0)" class="auth-link" @click="switchToSignup">
+            {{ t('Sign up') }}
+          </a>
+        </n-text>
+      </div>
+    </n-modal>
+
+    <!-- 注册弹窗 -->
+    <n-modal
+      v-model:show="showSignupModal"
+      preset="card"
+      :title="appName"
+      size="large"
+      :bordered="false"
+      :mask-closable="true"
+      style="max-width: 500px;"
+      class="auth-modal"
+    >
+      <n-form
+        ref="signupFormRef"
+        :model="signupFormData"
+        :rules="signupRules"
+        size="medium"
+        :show-label="false"
+        @keyup.enter="handleSignupSubmit"
+      >
+        <n-form-item path="username">
+          <n-input
+            v-model:value="signupFormData.username"
+            :placeholder="t('Username')"
+            :input-props="{ autocomplete: 'username' }"
+          >
+            <template #prefix>
+              <Icon icon="tabler:user" />
+            </template>
+          </n-input>
+        </n-form-item>
+
+        <n-form-item path="password">
+          <n-input
+            v-model:value="signupFormData.password"
+            type="password"
+            :placeholder="t('Password')"
+            :input-props="{ autocomplete: 'new-password' }"
+            show-password-on="click"
+          >
+            <template #prefix>
+              <Icon icon="tabler:lock" />
+            </template>
+          </n-input>
+        </n-form-item>
+
+        <n-form-item path="confirmPassword">
+          <n-input
+            v-model:value="signupFormData.confirmPassword"
+            type="password"
+            :placeholder="t('Confirm Password')"
+            :input-props="{ autocomplete: 'new-password' }"
+            show-password-on="click"
+          >
+            <template #prefix>
+              <Icon icon="tabler:lock" />
+            </template>
+          </n-input>
+        </n-form-item>
+
+        <n-form-item path="email">
+          <n-input
+            v-model:value="signupFormData.email"
+            :placeholder="t('Email (Optional)')"
+            :input-props="{ autocomplete: 'email', type: 'email' }"
+          >
+            <template #prefix>
+              <Icon icon="tabler:mail" />
+            </template>
+          </n-input>
+        </n-form-item>
+
+        <n-form-item path="phoneNumber">
+          <n-input
+            v-model:value="signupFormData.phoneNumber"
+            :placeholder="t('Phone Number')"
+            :input-props="{ autocomplete: 'tel' }"
+          >
+            <template #prefix>
+              <Icon icon="tabler:phone" />
+            </template>
+          </n-input>
+        </n-form-item>
+
+        <n-form-item>
+          <n-button
+            type="primary"
+            size="medium"
+            block
+            :loading="signupLoading"
+            @click="handleSignupSubmit"
+            class="brand-button"
+          >
+            {{ t('Sign up') }}
+          </n-button>
+        </n-form-item>
+      </n-form>
+
+      <div class="auth-footer">
+        <n-text depth="3">
+          {{ t('Already have an account?') }}
+          <a href="javascript:void(0)" class="auth-link" @click="switchToLogin">
+            {{ t('Login') }}
+          </a>
+        </n-text>
+      </div>
+    </n-modal>
   </div>
 </template>
 
@@ -1649,4 +2029,100 @@ onUnmounted(() => {
     padding: 40px 0 20px;
   }
 }
+
+/* 登录/注册弹窗样式 */
+:deep(.auth-modal) {
+  .n-card {
+    border-radius: 16px;
+    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
+  }
+
+  .n-card-header {
+    text-align: center;
+    padding: 24px 24px 16px;
+    border-bottom: none;
+  }
+
+  .n-card__content {
+    padding: 0 24px 24px;
+  }
+
+  .n-form-item {
+    margin-bottom: 6px !important;
+  }
+
+  .n-form-item:last-child {
+    margin-bottom: 0 !important;
+  }
+
+  .n-form-item:not(.n-form-item--error) .n-form-item__feedback-wrapper {
+    min-height: 0 !important;
+    margin-top: 0 !important;
+    padding-top: 0 !important;
+  }
+
+  .n-form-item--error .n-form-item__feedback-wrapper {
+    margin-top: 4px !important;
+    min-height: auto !important;
+  }
+}
+
+.auth-footer {
+  text-align: center;
+  margin-top: 16px;
+  padding-top: 16px;
+  border-top: 1px solid #e5e7eb;
+}
+
+.auth-link {
+  color: #1fc76f;
+  text-decoration: none;
+  font-weight: 500;
+  margin-left: 4px;
+  transition: color 0.2s;
+  cursor: pointer;
+
+  &:hover {
+    color: #1fc76f;
+    text-decoration: underline;
+  }
+}
+
+:deep(.brand-button) {
+  background: #e6f8f0 !important;
+  border: 1px solid #1fc76f !important;
+  color: #0d684b !important;
+}
+
+:deep(.brand-button .n-button__border),
+:deep(.brand-button .n-button__state-border) {
+  border: none !important;
+  border-color: transparent !important;
+}
+
+:deep(.brand-button:hover) {
+  background: #dcfce7 !important;
+  border-color: #1fc76f !important;
+  color: #166534 !important;
+  box-shadow: 0 2px 8px rgba(31, 199, 111, 0.15) !important;
+}
+
+:deep(.brand-button:hover .n-button__border),
+:deep(.brand-button:hover .n-button__state-border) {
+  border: none !important;
+  border-color: transparent !important;
+}
+
+:deep(.brand-button:active) {
+  background: #1fc76f !important;
+  border-color: #1fc76f !important;
+  color: white !important;
+  box-shadow: 0 1px 4px rgba(31, 199, 111, 0.2) !important;
+}
+
+:deep(.brand-button:active .n-button__border),
+:deep(.brand-button:active .n-button__state-border) {
+  border: none !important;
+  border-color: transparent !important;
+}
 </style>