diff --git a/README.md b/README.md
index 1cecf9c85..c0d8dfa46 100644
--- a/README.md
+++ b/README.md
@@ -649,4 +649,5 @@ var s = document.getElementsByTagName("script")[0];
 s.parentNode.insertBefore(hm, s);
 })();
 </script>
+<meta name="baidu-site-verification" content="rZl9hrrjp3" />
 </head>