diff --git a/docs/demo_guides/x86.md b/docs/demo_guides/x86.md
index 414aaeebe573f96f757219536b8f085b84fde342..a8a4c117b69d401a7630edc231736e1bd74ba89f 100644
--- a/docs/demo_guides/x86.md
+++ b/docs/demo_guides/x86.md
@@ -4,9 +4,17 @@
 
 Paddle-Lite 支持在Docker或Linux环境编译x86预测库。环境搭建参考[环境准备](../user_guides/source_compile)。
 
+如果编译python库(`build_python=ON`)需要额外安装`python-dev`和`patch`
+
+```shell
+apt-get install patch
+apt-get install python && apt-get install python-dev
+```
+
 ### 编译
 
 1、 下载代码
+
 ```bash
 # 下载Paddle-Lite源码
 git clone https://github.com/PaddlePaddle/Paddle-Lite.git