diff --git a/src/App.jsx b/src/App.jsx
index 64d032c..0f7d142 100644
--- a/src/App.jsx
+++ b/src/App.jsx
@@ -1,6 +1,7 @@
 import React, { lazy, Suspense } from 'react';
 import { Routes, Route, Navigate } from 'react-router-dom';
 import AuthGuard from './components/AuthGuard';
+import NotificationBell from './components/NotificationBell';
 import { ThemeProvider, useTheme } from './context/ThemeContext';
 
 const Login = lazy(() => import('./pages/Login'));
@@ -46,6 +47,7 @@ function ThemedRoutes() {
 
         <Route path="*" element={<Navigate to="/" replace />} />
       </Routes>
+      <NotificationBell />
     </Suspense>
   );
 }
diff --git a/src/components/NotificationBell.jsx b/src/components/NotificationBell.jsx
new file mode 100644
index 0000000..665197f
--- /dev/null
+++ b/src/components/NotificationBell.jsx
@@ -0,0 +1,77 @@
+import React, { useMemo, useState } from 'react';
+import { Bell, X } from 'lucide-react';
+import { useTranslation } from 'react-i18next';
+import { useSite } from '../context/SiteContext';
+
+export default function NotificationBell() {
+  const { t } = useTranslation();
+  const { site } = useSite();
+  const [open, setOpen] = useState(false);
+
+  const notifications = useMemo(() => {
+    if (!Array.isArray(site?.notifications)) return [];
+    return site.notifications
+      .filter((item) => item?.content)
+      .slice(0, 20);
+  }, [site?.notifications]);
+
+  if (notifications.length === 0) return null;
+
+  return (
+    <>
+      <button
+        type="button"
+        onClick={() => setOpen(true)}
+        className="fixed bottom-6 right-6 z-[80] flex h-14 w-14 items-center justify-center rounded-full border border-brand-500/30 bg-brand-500 text-white shadow-2xl shadow-brand-500/30 transition hover:scale-105 hover:bg-brand-600 focus:outline-none focus:ring-2 focus:ring-brand-400"
+        aria-label={t('notifications.open')}
+      >
+        <Bell size={22} />
+        <span className="absolute -right-1 -top-1 flex h-5 min-w-5 items-center justify-center rounded-full bg-red-500 px-1 text-[11px] font-bold text-white ring-2 ring-[var(--page-bg)]">
+          {notifications.length > 9 ? '9+' : notifications.length}
+        </span>
+      </button>
+
+      {open && (
+        <div className="fixed inset-0 z-[90] flex items-end justify-center bg-black/55 px-4 py-6 backdrop-blur-sm sm:items-center" onClick={() => setOpen(false)}>
+          <div
+            className="w-full max-w-lg overflow-hidden rounded-3xl border border-page-card-border bg-[var(--page-bg)] shadow-2xl"
+            onClick={(e) => e.stopPropagation()}
+          >
+            <div className="flex items-center justify-between border-b border-page-card-border bg-page-surface px-5 py-4">
+              <div className="flex items-center gap-3">
+                <div className="flex h-10 w-10 items-center justify-center rounded-2xl bg-brand-500/15 text-page-link">
+                  <Bell size={20} />
+                </div>
+                <div>
+                  <h2 className="text-base font-semibold text-page">{t('notifications.title')}</h2>
+                  <p className="text-xs text-page-muted">{t('notifications.subtitle')}</p>
+                </div>
+              </div>
+              <button
+                type="button"
+                onClick={() => setOpen(false)}
+                className="rounded-full p-2 text-page-muted transition hover:bg-page-surface-hover hover:text-page"
+                aria-label={t('common.close')}
+              >
+                <X size={18} />
+              </button>
+            </div>
+
+            <div className="max-h-[65vh] space-y-3 overflow-y-auto p-5">
+              {notifications.map((item, index) => (
+                <div key={`${item.publish_date || 'notice'}-${index}`} className="rounded-2xl border border-page-card-border bg-page-surface p-4">
+                  <div className="mb-2 inline-flex rounded-full bg-brand-500/10 px-3 py-1 text-xs font-medium text-page-link">
+                    {item.publish_date || t('notifications.notice')}
+                  </div>
+                  <p className="whitespace-pre-wrap text-sm leading-6 text-page-secondary">
+                    {item.content}
+                  </p>
+                </div>
+              ))}
+            </div>
+          </div>
+        </div>
+      )}
+    </>
+  );
+}
diff --git a/src/i18n/locales/en.json b/src/i18n/locales/en.json
index cdac093..d209f9d 100644
--- a/src/i18n/locales/en.json
+++ b/src/i18n/locales/en.json
@@ -9,6 +9,7 @@
     "nav.signUp": "Sign Up",
     "nav.logout": "Logout",
     "nav.contact": "Contact",
+    "common.close": "Close",
 
     "home.heroSubtitle": "Access the world's most powerful AI models through a single API endpoint. Simple, affordable, reliable.",
     "home.getStarted": "Get Started Free",
@@ -84,9 +85,10 @@
     "dashboard.redeem": "Redeem",
     "dashboard.redeemSuccess": "Code redeemed successfully!",
     "dashboard.quickLinks": "Quick Links",
-    "dashboard.announcements": "Announcements",
-    "dashboard.announcementsDesc": "Latest updates from the site owner",
-    "dashboard.notice": "Notice",
+    "notifications.open": "Open announcements",
+    "notifications.title": "Announcements",
+    "notifications.subtitle": "Latest updates from the site owner",
+    "notifications.notice": "Notice",
     "dashboard.apiKeys": "API Keys",
     "dashboard.manageKeys": "Manage your keys",
     "dashboard.packages": "Packages",
diff --git a/src/i18n/locales/zh.json b/src/i18n/locales/zh.json
index e527f86..e90617d 100644
--- a/src/i18n/locales/zh.json
+++ b/src/i18n/locales/zh.json
@@ -9,6 +9,7 @@
     "nav.signUp": "注册",
     "nav.logout": "退出",
     "nav.contact": "联系我们",
+    "common.close": "关闭",
 
     "home.heroSubtitle": "通过单一 API 端点访问全球最强大的 AI 模型。简单、实惠、可靠。",
     "home.getStarted": "免费开始",
@@ -84,9 +85,10 @@
     "dashboard.redeem": "兑换",
     "dashboard.redeemSuccess": "兑换码兑换成功！",
     "dashboard.quickLinks": "快捷入口",
-    "dashboard.announcements": "公告通知",
-    "dashboard.announcementsDesc": "站点管理员发布的最新消息",
-    "dashboard.notice": "通知",
+    "notifications.open": "打开公告通知",
+    "notifications.title": "公告通知",
+    "notifications.subtitle": "站点管理员发布的最新消息",
+    "notifications.notice": "通知",
     "dashboard.apiKeys": "API 密钥",
     "dashboard.manageKeys": "管理您的密钥",
     "dashboard.packages": "套餐",
diff --git a/src/pages/Dashboard.jsx b/src/pages/Dashboard.jsx
index affe88c..154d679 100644
--- a/src/pages/Dashboard.jsx
+++ b/src/pages/Dashboard.jsx
@@ -1,7 +1,6 @@
 import React, { useState, useEffect, useCallback } from 'react';
 import { Link } from 'react-router-dom';
 import { useTranslation } from 'react-i18next';
-import { Megaphone } from 'lucide-react';
 import { useAuth } from '../context/AuthContext';
 import {
   getUserUsage,
@@ -175,9 +174,6 @@ export default function Dashboard() {
   );
   const hasCustomCommissionRate =
     currentCommissionRate > defaultCommissionRate + 1e-8;
-  const announcements = Array.isArray(site?.announcements)
-    ? site.announcements.filter((item) => item?.content)
-    : (site?.announcement ? [{ content: site.announcement, publish_date: '' }] : []);
 
   const handleWithdraw = async () => {
     const amount = Number.parseFloat(withdrawAmount);
@@ -315,32 +311,6 @@ export default function Dashboard() {
         <p className="text-sm text-page-secondary">{t('dashboard.manageDesc')}</p>
       </div>
 
-      {announcements.length > 0 && (
-        <div className="glass rounded-2xl p-5 mb-8 border border-brand-500/20">
-          <div className="flex items-center gap-2 mb-4">
-            <div className="flex h-8 w-8 items-center justify-center rounded-full bg-brand-500/15 text-page-link">
-              <Megaphone size={17} />
-            </div>
-            <div>
-              <h2 className="text-base font-semibold text-page">{t('dashboard.announcements')}</h2>
-              <p className="text-xs text-page-muted">{t('dashboard.announcementsDesc')}</p>
-            </div>
-          </div>
-          <div className="space-y-3">
-            {announcements.slice(0, 10).map((item, index) => (
-              <div key={`${item.publish_date || 'notice'}-${index}`} className="flex gap-3 rounded-xl bg-page-surface/60 p-3">
-                <div className="shrink-0 rounded-full border border-brand-500/20 bg-brand-500/10 px-3 py-1 text-xs font-medium text-page-link">
-                  {item.publish_date || t('dashboard.notice')}
-                </div>
-                <p className="min-w-0 whitespace-pre-wrap text-sm leading-6 text-page-secondary">
-                  {item.content}
-                </p>
-              </div>
-            ))}
-          </div>
-        </div>
-      )}
-
       <div className="grid grid-cols-1 md:grid-cols-3 gap-6 mb-10">
         <div className="glass rounded-2xl p-6">
           <p className="text-sm text-page-secondary mb-2">{t('dashboard.balance')}</p>