diff --git a/open-isle-cli/src/main.js b/open-isle-cli/src/main.js
index 2e8b8c30a..b284c951d 100644
--- a/open-isle-cli/src/main.js
+++ b/open-isle-cli/src/main.js
@@ -9,11 +9,11 @@ import { checkToken, clearToken } from './utils/auth'
 import { initTheme } from './utils/theme'
 
 // Configurable API domain and port
-// export const API_DOMAIN = 'http://127.0.0.1'
-// export const API_PORT = 8081
+export const API_DOMAIN = 'http://127.0.0.1'
+export const API_PORT = 8081
 
-export const API_DOMAIN = 'http://47.82.99.208'
-export const API_PORT = 8080
+// export const API_DOMAIN = 'http://47.82.99.208'
+// export const API_PORT = 8080
 
 // export const API_BASE_URL = API_PORT ? `${API_DOMAIN}:${API_PORT}` : API_DOMAIN
 export const API_BASE_URL = "";
diff --git a/open-isle-cli/src/router/index.js b/open-isle-cli/src/router/index.js
index bde81096b..a870d149c 100644
--- a/open-isle-cli/src/router/index.js
+++ b/open-isle-cli/src/router/index.js
@@ -6,6 +6,7 @@ import SiteStatsPageView from '../views/SiteStatsPageView.vue'
 import PostPageView from '../views/PostPageView.vue'
 import LoginPageView from '../views/LoginPageView.vue'
 import SignupPageView from '../views/SignupPageView.vue'
+import SignupReasonPageView from '../views/SignupReasonPageView.vue'
 import NewPostPageView from '../views/NewPostPageView.vue'
 import SettingsPageView from '../views/SettingsPageView.vue'
 import ProfileView from '../views/ProfileView.vue'
@@ -52,6 +53,11 @@ const routes = [
     name: 'signup',
     component: SignupPageView
   },
+  {
+    path: '/signup-reason',
+    name: 'signup-reason',
+    component: SignupReasonPageView
+  },
   {
     path: '/settings',
     name: 'settings',
diff --git a/open-isle-cli/src/utils/google.js b/open-isle-cli/src/utils/google.js
index bde09a552..a529f88ed 100644
--- a/open-isle-cli/src/utils/google.js
+++ b/open-isle-cli/src/utils/google.js
@@ -1,7 +1,7 @@
 import { API_BASE_URL, GOOGLE_CLIENT_ID, toast } from '../main'
 import { setToken, loadCurrentUser } from './auth'
 
-export function googleSignIn(redirect) {
+export function googleSignIn(redirect, reason) {
   if (!window.google || !GOOGLE_CLIENT_ID) {
     toast.error('Google 登录不可用')
     return
@@ -13,7 +13,7 @@ export function googleSignIn(redirect) {
         const res = await fetch(`${API_BASE_URL}/api/auth/google`, {
           method: 'POST',
           headers: { 'Content-Type': 'application/json' },
-          body: JSON.stringify({ idToken: credential })
+          body: JSON.stringify({ idToken: credential, reason })
         })
         const data = await res.json()
         if (res.ok && data.token) {
diff --git a/open-isle-cli/src/views/MessagePageView.vue b/open-isle-cli/src/views/MessagePageView.vue
index f68ae9ca3..17ac717ee 100644
--- a/open-isle-cli/src/views/MessagePageView.vue
+++ b/open-isle-cli/src/views/MessagePageView.vue
@@ -181,6 +181,15 @@
                   已提交审核
                 </NotificationContainer>
               </template>
+              <template v-else-if="item.type === 'REGISTER_REQUEST'">
+                <NotificationContainer :item="item" :markRead="markRead">
+                  {{ item.fromUser.username }} 希望注册为会员，理由是：{{ item.content }}
+                  <template #actions v-if="authState.role === 'ADMIN'">
+                    <button class="mark-read-button-item" @click="approve(item.fromUser.id, item.id)">同意</button>
+                    <button class="mark-read-button-item" @click="reject(item.fromUser.id, item.id)">拒绝</button>
+                  </template>
+                </NotificationContainer>
+              </template>
               <template v-else-if="item.type === 'POST_REVIEWED' && item.approved">
                 <NotificationContainer :item="item" :markRead="markRead">
                   您发布的帖子
@@ -226,7 +235,7 @@ import { API_BASE_URL } from '../main'
 import BaseTimeline from '../components/BaseTimeline.vue'
 import BasePlaceholder from '../components/BasePlaceholder.vue'
 import NotificationContainer from '../components/NotificationContainer.vue'
-import { getToken } from '../utils/auth'
+import { getToken, authState } from '../utils/auth'
 import { markNotificationsRead } from '../utils/notification'
 import { toast } from '../main'
 import { stripMarkdown } from '../utils/markdown'
@@ -276,7 +285,8 @@ export default {
       USER_FOLLOWED: 'fas fa-user-plus',
       USER_UNFOLLOWED: 'fas fa-user-minus',
       POST_SUBSCRIBED: 'fas fa-bookmark',
-      POST_UNSUBSCRIBED: 'fas fa-bookmark'
+      POST_UNSUBSCRIBED: 'fas fa-bookmark',
+      REGISTER_REQUEST: 'fas fa-user-clock'
     }
 
     const reactionEmojiMap = {
@@ -393,7 +403,7 @@ export default {
                 }
               }
             })
-          } else if (n.type === 'POST_REVIEW_REQUEST') {
+         } else if (n.type === 'POST_REVIEW_REQUEST') {
             notifications.value.push({
               ...n,
               src: n.fromUser ? n.fromUser.avatar : null,
@@ -405,6 +415,12 @@ export default {
                 }
               }
             })
+          } else if (n.type === 'REGISTER_REQUEST') {
+            notifications.value.push({
+              ...n,
+              icon: iconMap[n.type],
+              iconClick: () => {}
+            })
           } else {
             notifications.value.push({
               ...n,
@@ -417,6 +433,36 @@ export default {
       }
     }
 
+    const approve = async (id, nid) => {
+      const token = getToken()
+      if (!token) return
+      const res = await fetch(`${API_BASE_URL}/api/admin/users/${id}/approve`, {
+        method: 'POST',
+        headers: { Authorization: `Bearer ${token}` }
+      })
+      if (res.ok) {
+        markRead(nid)
+        toast.success('已同意')
+      } else {
+        toast.error('操作失败')
+      }
+    }
+
+    const reject = async (id, nid) => {
+      const token = getToken()
+      if (!token) return
+      const res = await fetch(`${API_BASE_URL}/api/admin/users/${id}/reject`, {
+        method: 'POST',
+        headers: { Authorization: `Bearer ${token}` }
+      })
+      if (res.ok) {
+        markRead(nid)
+        toast.success('已拒绝')
+      } else {
+        toast.error('操作失败')
+      }
+    }
+
     const formatType = t => {
       switch (t) {
         case 'POST_VIEWED':
@@ -456,10 +502,13 @@ export default {
       sanitizeDescription,
       isLoadingMessage,
       markRead,
+      approve,
+      reject,
       TimeManager,
       selectedTab,
       filteredNotifications,
-      markAllRead
+      markAllRead,
+      authState
     }
   }
 }
diff --git a/open-isle-cli/src/views/SettingsPageView.vue b/open-isle-cli/src/views/SettingsPageView.vue
index 9c0fa3106..ae9d90dbd 100644
--- a/open-isle-cli/src/views/SettingsPageView.vue
+++ b/open-isle-cli/src/views/SettingsPageView.vue
@@ -40,6 +40,10 @@
           <div class="setting-title">AI 优化次数</div>
           <Dropdown v-model="aiFormatLimit" :fetch-options="fetchAiLimits" />
         </div>
+        <div class="form-row dropdown-row">
+          <div class="setting-title">注册模式</div>
+          <Dropdown v-model="registerMode" :fetch-options="fetchRegisterModes" />
+        </div>
       </div>
       <div class="buttons">
         <div v-if="isSaving" class="save-button disabled">保存中...</div>
@@ -70,6 +74,7 @@ export default {
       publishMode: 'DIRECT',
       passwordStrength: 'LOW',
       aiFormatLimit: 3,
+      registerMode: 'DIRECT',
       isLoadingPage: false,
       isSaving: false
     }
@@ -122,6 +127,12 @@ export default {
         { id: -1, name: '无限' }
       ])
     },
+    fetchRegisterModes() {
+      return Promise.resolve([
+        { id: 'DIRECT', name: '直接注册', icon: 'fas fa-user-check' },
+        { id: 'WHITELIST', name: '白名单邀请制', icon: 'fas fa-envelope' }
+      ])
+    },
     async loadAdminConfig() {
       try {
         const token = getToken()
@@ -133,6 +144,7 @@ export default {
           this.publishMode = data.publishMode
           this.passwordStrength = data.passwordStrength
           this.aiFormatLimit = data.aiFormatLimit
+          this.registerMode = data.registerMode
         }
       } catch (e) {
         // ignore
@@ -183,7 +195,7 @@ export default {
           await fetch(`${API_BASE_URL}/api/admin/config`, {
             method: 'POST',
             headers: { 'Content-Type': 'application/json', Authorization: `Bearer ${token}` },
-            body: JSON.stringify({ publishMode: this.publishMode, passwordStrength: this.passwordStrength, aiFormatLimit: this.aiFormatLimit })
+            body: JSON.stringify({ publishMode: this.publishMode, passwordStrength: this.passwordStrength, aiFormatLimit: this.aiFormatLimit, registerMode: this.registerMode })
           })
         }
         toast.success('保存成功')
diff --git a/open-isle-cli/src/views/SignupPageView.vue b/open-isle-cli/src/views/SignupPageView.vue
index 04f0c31b2..cee7c74b5 100644
--- a/open-isle-cli/src/views/SignupPageView.vue
+++ b/open-isle-cli/src/views/SignupPageView.vue
@@ -94,6 +94,7 @@ export default {
       email: '',
       username: '',
       password: '',
+      registerMode: 'DIRECT',
       emailError: '',
       usernameError: '',
       passwordError: '',
@@ -103,6 +104,19 @@ export default {
       isWaitingForEmailVerified: false
     }
   },
+  async mounted() {
+    try {
+      const res = await fetch(`${API_BASE_URL}/api/config`)
+      if (res.ok) {
+        const data = await res.json()
+        this.registerMode = data.registerMode
+      }
+    } catch {}
+    if (this.$route.query.verify) {
+      this.emailStep = 1
+      this.username = sessionStorage.getItem('signup_username') || ''
+    }
+  },
   methods: {
     clearErrors() {
       this.emailError = ''
@@ -126,6 +140,13 @@ export default {
       if (this.emailError || this.passwordError || this.usernameError) {
         return
       }
+      if (this.registerMode === 'WHITELIST') {
+        sessionStorage.setItem('signup_username', this.username)
+        sessionStorage.setItem('signup_email', this.email)
+        sessionStorage.setItem('signup_password', this.password)
+        this.$router.push('/signup-reason')
+        return
+      }
       try {
         console.log('base url: ', API_BASE_URL)
         this.isWaitingForEmailSent = true
@@ -135,7 +156,7 @@ export default {
           body: JSON.stringify({
             username: this.username,
             email: this.email,
-            password: this.password,
+            password: this.password
           })
         })
         this.isWaitingForEmailSent = false
@@ -175,9 +196,13 @@ export default {
       }
     },
     signupWithGoogle() {
-      googleSignIn(() => {
-        this.$router.push('/')
-      })
+      if (this.registerMode === 'WHITELIST') {
+        this.$router.push('/signup-reason?google=1')
+      } else {
+        googleSignIn(() => {
+          this.$router.push('/')
+        })
+      }
     }
   }
 }
diff --git a/open-isle-cli/src/views/SignupReasonPageView.vue b/open-isle-cli/src/views/SignupReasonPageView.vue
new file mode 100644
index 000000000..a78a74db5
--- /dev/null
+++ b/open-isle-cli/src/views/SignupReasonPageView.vue
@@ -0,0 +1,76 @@
+<template>
+  <div class="reason-page">
+    <div class="reason-content">
+      <BaseInput textarea rows="4" v-model="reason" placeholder="请填写注册理由" />
+      <div v-if="error" class="error-message">{{ error }}</div>
+      <div class="signup-page-button-primary" @click="submit" >提交</div>
+    </div>
+  </div>
+</template>
+
+<script>
+import BaseInput from '../components/BaseInput.vue'
+import { API_BASE_URL, toast } from '../main'
+import { googleSignIn } from '../utils/google'
+
+export default {
+  name: 'SignupReasonPageView',
+  components: { BaseInput },
+  data() {
+    return {
+      reason: '',
+      error: '',
+      isGoogle: false
+    }
+  },
+  mounted() {
+    this.isGoogle = this.$route.query.google === '1'
+    if (!this.isGoogle) {
+      if (!sessionStorage.getItem('signup_username')) {
+        this.$router.push('/signup')
+      }
+    }
+  },
+  methods: {
+    async submit() {
+      if (!this.reason || this.reason.length < 20) {
+        this.error = '请至少输入20个字'
+        return
+      }
+      if (this.isGoogle) {
+        googleSignIn(() => { this.$router.push('/') }, this.reason)
+        return
+      }
+      try {
+        const res = await fetch(`${API_BASE_URL}/api/auth/register`, {
+          method: 'POST',
+          headers: { 'Content-Type': 'application/json' },
+          body: JSON.stringify({
+            username: sessionStorage.getItem('signup_username'),
+            email: sessionStorage.getItem('signup_email'),
+            password: sessionStorage.getItem('signup_password'),
+            reason: this.reason
+          })
+        })
+        const data = await res.json()
+        if (res.ok) {
+          toast.success('验证码已发送，请查收邮箱')
+          this.$router.push('/signup?verify=1')
+        } else {
+          toast.error(data.error || '发送失败')
+        }
+      } catch (e) {
+        toast.error('发送失败')
+      }
+    }
+  }
+}
+</script>
+
+<style scoped>
+.reason-page { display: flex; justify-content: center; align-items: center; height: calc(100vh - var(--header-height)); }
+.reason-content { display: flex; flex-direction: column; gap: 20px; width: 400px; }
+.error-message { color: red; font-size: 14px; }
+.signup-page-button-primary { background-color: var(--primary-color); color: white; padding: 10px 20px; border-radius: 10px; text-align: center; cursor: pointer; }
+.signup-page-button-primary:hover { background-color: var(--primary-color-hover); }
+</style>
diff --git a/src/main/java/com/openisle/controller/AuthController.java b/src/main/java/com/openisle/controller/AuthController.java
index cf9483456..3aba770c9 100644
--- a/src/main/java/com/openisle/controller/AuthController.java
+++ b/src/main/java/com/openisle/controller/AuthController.java
@@ -7,7 +7,10 @@ import com.openisle.service.UserService;
 import com.openisle.service.CaptchaService;
 import com.openisle.service.GoogleAuthService;
 import com.openisle.service.RegisterModeService;
+import com.openisle.service.NotificationService;
 import com.openisle.model.RegisterMode;
+import com.openisle.model.NotificationType;
+import com.openisle.repository.UserRepository;
 import lombok.Data;
 import lombok.RequiredArgsConstructor;
 import org.springframework.http.ResponseEntity;
@@ -26,6 +29,8 @@ public class AuthController {
     private final CaptchaService captchaService;
     private final GoogleAuthService googleAuthService;
     private final RegisterModeService registerModeService;
+    private final NotificationService notificationService;
+    private final UserRepository userRepository;
 
     @Value("${app.captcha.enabled:false}")
     private boolean captchaEnabled;
@@ -44,6 +49,12 @@ public class AuthController {
         User user = userService.register(
                 req.getUsername(), req.getEmail(), req.getPassword(), req.getReason(), registerModeService.getRegisterMode());
         emailService.sendEmail(user.getEmail(), "Verification Code", "Your verification code is " + user.getVerificationCode());
+        if (!user.isApproved()) {
+            for (User admin : userRepository.findByRole(com.openisle.model.Role.ADMIN)) {
+                notificationService.createNotification(admin, NotificationType.REGISTER_REQUEST, null, null,
+                        null, user, null, user.getRegisterReason());
+            }
+        }
         return ResponseEntity.ok(Map.of("message", "Verification code sent"));
     }
 
diff --git a/src/main/java/com/openisle/controller/NotificationController.java b/src/main/java/com/openisle/controller/NotificationController.java
index a4e1db326..2e23fe452 100644
--- a/src/main/java/com/openisle/controller/NotificationController.java
+++ b/src/main/java/com/openisle/controller/NotificationController.java
@@ -64,6 +64,7 @@ public class NotificationController {
             dto.setReactionType(n.getReactionType());
         }
         dto.setApproved(n.getApproved());
+        dto.setContent(n.getContent());
         dto.setRead(n.isRead());
         dto.setCreatedAt(n.getCreatedAt());
         return dto;
@@ -107,6 +108,7 @@ public class NotificationController {
         private CommentDto parentComment;
         private AuthorDto fromUser;
         private ReactionType reactionType;
+        private String content;
         private Boolean approved;
         private boolean read;
         private LocalDateTime createdAt;