diff --git a/Introduction.md b/Introduction.md
index 4d05388..eb3c098 100644
--- a/Introduction.md
+++ b/Introduction.md
@@ -89,7 +89,13 @@
 <p>说明：</p>
 <ul>
 <li>图中的协议4byte header，主要是描述整个binlog网络包的length</li>
-<li>binlog event structure，详细信息请参考： <a href="http://forge.mysql.com/wiki/MySQL_Internals_Binary_Log">http://forge.mysql.com/wiki/MySQL_Internals_Binary_Log</a>
+<li>binlog event structure，详细信息请参考： 
+
+~~http://forge.mysql.com/wiki/MySQL_Internals_Binary_Log~~
+
+<a href="https://dev.mysql.com/doc/internals/en/event-structure.html">https://dev.mysql.com/doc/internals/en/event-structure.html</a>
+
+<a href="https://dev.mysql.com/doc/internals/en/binlog-event.html">https://dev.mysql.com/doc/internals/en/binlog-event.html</a>
 </li>
 </ul>
 <h2>EventSink设计</h2>