diff --git a/index.html b/index.html
index e6fa0ef..6fdc3cb 100644
--- a/index.html
+++ b/index.html
@@ -19,7 +19,7 @@
     <meta property="og:description" content="适用于班级大屏的作业板小工具，支持记录、查看并同步作业，开源免费。" />
     <meta property="og:url" content="https://cs.houlang.cloud/" />
     <meta property="og:site_name" content="Classworks" />
-    <meta property="og:image" content="https://cs.houlang.cloud/pwa/image/pwa-512x512.png" />
+    <meta property="og:image" content="https://cs.houlang.cloud/banner.png" />
     <meta property="og:image:width" content="512" />
     <meta property="og:image:height" content="512" />
     <meta property="og:locale" content="zh_CN" />
@@ -28,7 +28,7 @@
     <meta name="twitter:card" content="summary" />
     <meta name="twitter:title" content="Classworks 作业板" />
     <meta name="twitter:description" content="适用于班级大屏的作业板小工具，支持记录、查看并同步作业，开源免费。" />
-    <meta name="twitter:image" content="https://cs.houlang.cloud/pwa/image/pwa-512x512.png" />
+    <meta name="twitter:image" content="https://cs.houlang.cloud/banner.png" />
 
     <link rel="apple-touch-icon" href="/image/apple-touch-icon.png" sizes="180x180" />
     <link rel="mask-icon" href="/image/mask-icon.svg" color="#212121" />
diff --git a/public/banner.png b/public/banner.png
new file mode 100644
index 0000000..64718b0
Binary files /dev/null and b/public/banner.png differ