diff --git a/index.html b/index.html
index 59a5ed0e413acaa356c6ee342650ca2547630f3e..ca5d9fbebb2acc3ae08b3538896fd6af4ebdf9dd 100644
--- a/index.html
+++ b/index.html
@@ -5,9 +5,9 @@
     <meta charset="UTF-8">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <script src="https://hm.baidu.com/hm.js?29d14c9fb6158fcbec79d1a0d1425404"></script>
     <title>二维码：生成、扫描、识别</title>
     <link rel="stylesheet" href="./css/base.css" />
+    <script async src="//hm.baidu.com/hm.js?29d14c9fb6158fcbec79d1a0d1425404"></script>
 </head>
 
 <body>
