diff --git a/web/src/components/HeaderBar.js b/web/src/components/HeaderBar.js
index b7cf9061..981a34fb 100644
--- a/web/src/components/HeaderBar.js
+++ b/web/src/components/HeaderBar.js
@@ -118,13 +118,19 @@ const HeaderBar = () => {
   useEffect(() => {
     if (theme === 'dark') {
       document.body.setAttribute('theme-mode', 'dark');
+    } else {
+      document.body.removeAttribute('theme-mode');
+    }
+    // 发送当前主题模式给子页面
+    const iframe = document.querySelector('iframe');
+    if (iframe) {
+      iframe.contentWindow.postMessage({ themeMode: theme }, '*');
     }
 
     if (isNewYear) {
       console.log('Happy New Year!');
     }
-  }, []);
-
+  }, [theme]); // 监听 theme-mode 的变化
   return (
     <>
       <Layout>
diff --git a/web/src/pages/Home/index.js b/web/src/pages/Home/index.js
index 38029528..ad7cba32 100644
--- a/web/src/pages/Home/index.js
+++ b/web/src/pages/Home/index.js
@@ -35,6 +35,19 @@ const Home = () => {
       }
       setHomePageContent(content);
       localStorage.setItem('home_page_content', content);
+
+        // 如果内容是 URL，则发送主题模式
+        if (data.startsWith('https://')) {
+            const iframe = document.querySelector('iframe');
+            if (iframe) {
+                const theme = localStorage.getItem('theme-mode') || 'light';
+                // 测试是否正确传递theme-mode给iframe
+                // console.log('Sending theme-mode to iframe:', theme); 
+                iframe.onload = () => {
+                    iframe.contentWindow.postMessage({ themeMode: theme }, '*');
+                };
+            }
+        }
     } else {
       showError(message);
       setHomePageContent('加载首页内容失败...');