diff --git a/4-install-guide/4-install-with-docker.md b/4-install-guide/4-install-with-docker.md
index 4dcf3d10be59079615d2e39dafda6ac7ae89221a..ee31106e675fc8963e5205b974032fe6771a98b1 100644
--- a/4-install-guide/4-install-with-docker.md
+++ b/4-install-guide/4-install-with-docker.md
@@ -34,7 +34,6 @@ $ systemctl start docker
 拉取GreatSQL官方镜像
 ```
 $ docker pull greatsql/greatsql
-docker pull greatsql/greatsql
 Using default tag: latest
 Trying to pull repository docker.io/greatsql/greatsql ...
 latest: Pulling from docker.io/greatsql/greatsql