diff --git a/docs/doc/appdev/debug/JLink-KD233.md b/docs/doc/appdev/debug/JLink-KD233.md
index b7e4b56..6f6d59f 100644
--- a/docs/doc/appdev/debug/JLink-KD233.md
+++ b/docs/doc/appdev/debug/JLink-KD233.md
@@ -5,21 +5,21 @@
 **操作系统：** ubuntu18.04     [  https://ubuntu.com/download/desktop](https://ubuntu.com/download/desktop)
 
 调试工具：JLink（实物如图）
-</br>
-<div align=center><img src="https://img-blog.csdnimg.cn/20210427215116310.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0FJSVRfVWJpcXVpdG91cw==,size_16,color_FFFFFF,t_70" /></div>
-</br>
+
+![img](https://img-blog.csdnimg.cn/20210427215116310.png)
+
 调试开发板：KD233（实物如图）
-</br>
-<div align=center><img src="https://img-blog.csdnimg.cn/20210430203005560.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0FJSVRfVWJpcXVpdG91cw==,size_16,color_FFFFFF,t_70#pic_center" /></div>
+
+![img](https://img-blog.csdnimg.cn/20210430203005560.png)
 
 # 调试步骤
 
 ## 步骤一
 1.下载JLink驱动（Ubuntu下载DEB包）
 下载地址：[SEGGER - The Embedded Experts - Downloads - J-Link / J-Trace](https://www.segger.com/downloads/jlink),[推荐下载地址  http://101.36.126.201:8011/JLink_Linux_V720_x86_64.deb](http://101.36.126.201:8011/JLink_Linux_V720_x86_64.deb)
-</br>
-<div align=center><img src="https://img-blog.csdnimg.cn/20210427214025688.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0FJSVRfVWJpcXVpdG91cw==,size_16,color_FFFFFF,t_70#pic_center" /></div>
-</br>
+
+![img](https://img-blog.csdnimg.cn/20210427214025688.png)
+
 
 2.安装JLink驱动
 ```bash
@@ -46,9 +46,9 @@ J-Link>
 
 1.安装openocd（下载Ubuntu版本64位）
 下载地址：[Releases · kendryte/openocd-kendryte (github.com)](https://github.com/kendryte/openocd-kendryte/releases),推荐下载地址为：[http://101.36.126.201:8011/kendryte-openocd-0.2.3-ubuntu64.tar.gz](http://101.36.126.201:8011/kendryte-openocd-0.2.3-ubuntu64.tar.gz)
-</br>
-<div align=center><img src="https://img-blog.csdnimg.cn/20210427214045491.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0FJSVRfVWJpcXVpdG91cw==,size_16,color_FFFFFF,t_70#pic_center" /></div>
-</br>
+
+![img](https://img-blog.csdnimg.cn/20210427214045491.png)
+
 
 2.安装openocd
 ```bash
@@ -63,7 +63,7 @@ $ sudo tar -zxvf kendryte-openocd-0.2.3-ubuntu64.tar.gz
 $ sudo vim /opt/kendryte-openocd/tcl/openocd.cfg
 ```
 
-<div align=center><img src="https://img-blog.csdnimg.cn/20210501164846463.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0FJSVRfVWJpcXVpdG91cw==,size_16,color_FFFFFF,t_70#pic_center" /></div>
+![img](https://img-blog.csdnimg.cn/20210501164846463.png)
 </br>
 序列号从JLink的背面标签可以查看，也可以在JLink连接计算机后敲击JLinkExe命令看到。