diff --git a/README.md b/README.md
index c5df31c..a544e5b 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,6 @@
 # xai-cloud-iot-learning
 
 
-<video src="https://qizhiguo-oss-01.oss-cn-qingdao.aliyuncs.com/20230718_092747.mp4"></video>
+<video width="320" height="240" controls>
+    <source src="https://qizhiguo-oss-01.oss-cn-qingdao.aliyuncs.com/20230718_092747.mp4" type="video/mp4">
+</video>