diff --git a/docs/zh_CN/uiflow/advanced.md b/docs/zh_CN/uiflow/advanced.md
index 6144200a..0a7a1783 100644
--- a/docs/zh_CN/uiflow/advanced.md
+++ b/docs/zh_CN/uiflow/advanced.md
@@ -767,9 +767,6 @@ wifi重新连接
 * __Rx buffer cache number__ 
 从缓冲区读取的字节数
 
-* __Rx buffer cache number__ 
-从缓冲区读取的字节数
-
 * __Read rx data__ 
 读取接收的数据包，适用于自定义处理