diff --git a/rt-thread-version/rt-thread-standard/tutorial/qemu-network/tcpclient_select/tcpclient_select.md b/rt-thread-version/rt-thread-standard/tutorial/qemu-network/tcpclient_select/tcpclient_select.md
index 179af482df715fae04af4345d2c2d1206ab42997..dfce68cced7ff9873662292f4552c90c6115062c 100644
--- a/rt-thread-version/rt-thread-standard/tutorial/qemu-network/tcpclient_select/tcpclient_select.md
+++ b/rt-thread-version/rt-thread-standard/tutorial/qemu-network/tcpclient_select/tcpclient_select.md
@@ -12,7 +12,7 @@
 
 这里我们先用一个简单的 *利用 select 实现的 tcp 客户端* ，给大家展示 select 函数的基本用法。在掌握 select 的基本用法之后，就可以从下面的应用笔记中找到以上问题的解决方法了。
 
-应用笔记：[基于多线程的非阻塞 socket 编程](https://www.rt-thread.org/document/site/application-note/components/network/an0019-rtthread-system-tcpclient-socket/)
+应用笔记：[基于多线程的非阻塞 socket 编程](https://www.rt-thread.org/document/site/#/rt-thread-version/rt-thread-standard/application-note/components/network/an0019-tcpclient-socket)
 
 ## 准备工作