diff --git a/docs/java/basis/BIO,NIO,AIO总结.md b/docs/java/basis/BIO,NIO,AIO总结.md
index d56074cd..29d2ca86 100644
--- a/docs/java/basis/BIO,NIO,AIO总结.md
+++ b/docs/java/basis/BIO,NIO,AIO总结.md
@@ -15,7 +15,7 @@
       - [2)Buffer\(缓冲区\)](#2buffer缓冲区)
       - [3)Channel \(通道\)](#3channel-通道)
       - [4)Selectors\(选择器\)](#4selectors选择器)
-    - [2.3  NIO 读数据和写数据方式](#23-nio-读数据和写数据方式)
+    - [2.3  NIO 读数据和写数据方式](#23--nio-读数据和写数据方式)
     - [2.4 NIO核心组件简单介绍](#24-nio核心组件简单介绍)
     - [2.5 代码示例](#25-代码示例)
   - [3. AIO  \(Asynchronous I/O\)](#3-aio-asynchronous-io)