diff --git a/doc/index.html b/doc/index.html
index 8aec04a51338ee40321dac71bb40b8150e55aede..5ec3924d3e308a69f4e3e862703e1feced3389be 100644
--- a/doc/index.html
+++ b/doc/index.html
@@ -4,7 +4,9 @@
     <meta charset="UTF-8">
     <title>open-util</title>
 </head>
+<script>
+    window.open('https://www.yuque.com/4n/sdk/hk9whes0qmtkeg3g', '_blank');
+</script>
 <body>
-https://www.yuque.com/4n/sdk/hk9whes0qmtkeg3g
 </body>
 </html>
\ No newline at end of file
