diff --git a/pgsql/Demo/SingleNode/README.md b/pgsql/Demo/SingleNode/README.md
index 93b60d2..a24534c 100644
--- a/pgsql/Demo/SingleNode/README.md
+++ b/pgsql/Demo/SingleNode/README.md
@@ -7,6 +7,7 @@
 - 创建目录
     ```
     grep '\<source:' docker-compose.yml | cut -d: -f2 | xargs mkdir -p
+    chmod 0750 pgsql/db
     ```
 
 - 启动
diff --git a/pgsql/Demo/StreamReplication/README.md b/pgsql/Demo/StreamReplication/README.md
index 5869bdf..6fb8812 100644
--- a/pgsql/Demo/StreamReplication/README.md
+++ b/pgsql/Demo/StreamReplication/README.md
@@ -8,6 +8,7 @@
 - 创建目录
     ```
     grep '\<source:' docker-compose.yml | cut -d: -f2 | xargs mkdir -p
+    chmod 0750 pgsql{1..2}/db
     ```
 
 - 启动