diff --git a/README.md b/README.md
index 423585d..d67e54f 100644
--- a/README.md
+++ b/README.md
@@ -64,7 +64,8 @@
 http://192.168.1.3:3000/WaveBox/WaveBox/raw/branch/master/test_tools/uart_test_tools.zip
 http://192.168.1.3:3000/WaveBox/WaveBox/raw/branch/master/test_tools/脉冲发生器安装程序Ver2.EXE
 ```
-[串口工具](http://192.168.1.3:3000/WaveBox/WaveBox/raw/branch/master/test_tools/uart_test_tools.zip)
+[串口工具](./raw/branch/master/test_tools/uart_test_tools.zip)
+
 [脉冲发生器安装程序Ver2](http://192.168.1.3:3000/WaveBox/WaveBox/raw/branch/master/test_tools/脉冲发生器安装程序Ver2.EXE)