diff --git a/README.md b/README.md
index 26f83ce..e492e70 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,7 @@ vim ~/.bashrc
 export PATH=$PATH:/usr/local/go/bin
 export GOPATH=$HOME/go
 export PATH=$PATH:$GOPATH/bin
+//使生效环境变量
 source ~/.bashrc
 //验证安装
 go version