diff --git a/docs/zh_CN/unit/cardkb.md b/docs/zh_CN/unit/cardkb.md
index d41a5a30..0377148f 100644
--- a/docs/zh_CN/unit/cardkb.md
+++ b/docs/zh_CN/unit/cardkb.md
@@ -110,4 +110,4 @@ void loop()
 
 **CarKB 的使用演示**
 
-<iframe height=498 width=510 src='https://player.youku.com/embed/XNDAyNDcxODYwOA==' frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
\ No newline at end of file
+<iframe width="560" height="315" src="https://m5stack.oss-cn-shenzhen.aliyuncs.com/video/Blog/Twitch201901/M5stack%20Cardkb.mp4" frameborder="0" allow="accelerometer; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>