diff --git a/README.md b/README.md
index cb91b2b..1a4b68a 100644
--- a/README.md
+++ b/README.md
@@ -29,6 +29,7 @@ git submodule init && git submodule update
 
 在parser根目录执行以下命令编译：
 ```
+export ASCEND_CUSTOM_PATH=910基础安装包的安装路径
 bash build.sh
 ```