diff --git a/pgadmin/Dockerfile b/pgadmin/Dockerfile
index 5836801f..0ad672b7 100644
--- a/pgadmin/Dockerfile
+++ b/pgadmin/Dockerfile
@@ -4,7 +4,7 @@ MAINTAINER Huadong Zuo <admin@zuohuadong.cn>
 
 # user: pgadmin4@pgadmin.org
 # password: admin
-# pg_dump in  "/usr/bin"
-# backup in "/var/lib/pgadmin4/data/storage/pgadmin4/"
+# pg_dump & postgresql all in  "/usr/bin"
+# backup in "/var/lib/pgadmin/storage/pgadmin4"
 
 EXPOSE 5050