diff --git a/web/src/pages/Home.tsx b/web/src/pages/Home.tsx
index 34c4020..cc8cb35 100644
--- a/web/src/pages/Home.tsx
+++ b/web/src/pages/Home.tsx
@@ -144,6 +144,12 @@ const Home: React.FC = () => {
     return saved !== null ? saved === 'true' : false
   })
 
+  // 公告显示状态
+  const [showAnnouncement, setShowAnnouncement] = useState(() => {
+    const dismissed = localStorage.getItem('announcementDismissed')
+    return dismissed !== 'true'
+  })
+
   // 加载统计数据
   const loadStatistics = async () => {
     try {
@@ -404,6 +410,12 @@ const Home: React.FC = () => {
     }
   }
 
+  // 关闭公告
+  const handleCloseAnnouncement = () => {
+    setShowAnnouncement(false)
+    localStorage.setItem('announcementDismissed', 'true')
+  }
+
   // 获取用户类型显示文本
   const getUserTypeText = (type?: string) => {
     if (!type) return '未设置'
@@ -560,6 +572,28 @@ const Home: React.FC = () => {
         )}
       </div>
 
+      {/* 更新公告 */}
+      {showAnnouncement && (
+        <Alert
+          message="系统更新公告"
+          description={
+            <div>
+              <p style={{ marginBottom: 8 }}>本次更新内容：</p>
+              <ul style={{ marginBottom: 0, paddingLeft: 20 }}>
+                <li>✨ 新增每日一练功能：系统每天自动生成练习试卷，支持在线答题</li>
+                <li>🏆 新增每日一练排行榜：实时查看今日答题排名，激发学习动力</li>
+                <li>📝 调整模拟考试试卷组成：优化题型分布和分数配比，更贴近实际考试</li>
+              </ul>
+            </div>
+          }
+          type="info"
+          showIcon
+          closable
+          onClose={handleCloseAnnouncement}
+          style={{ marginBottom: 24 }}
+        />
+      )}
+
       {/* 题型选择 */}
       <div className={styles.typeSection}>
         <Title level={4} className={styles.sectionTitle}>