diff --git a/docs/docs/docs-cn/4.installation-and-deployment/6.optional-configuring-clock-sources.md b/docs/docs/docs-cn/4.installation-and-deployment/6.optional-configuring-clock-sources.md
index 28e82aaee..b3f6af867 100644
--- a/docs/docs/docs-cn/4.installation-and-deployment/6.optional-configuring-clock-sources.md
+++ b/docs/docs/docs-cn/4.installation-and-deployment/6.optional-configuring-clock-sources.md
@@ -107,7 +107,7 @@ OceanBase 集群中的服务器时间必须保持一致，否则会导致 OceanB
    3. 运行以下命令同步 NTP 服务端时间：
 
       ```bash
-      ntpdate 10.244.0.114
+      ntpdate <yout_ntp_server_ip>
       ```
 
       
@@ -133,7 +133,7 @@ OceanBase 集群中的服务器时间必须保持一致，否则会导致 OceanB
    5. 运行以下命令，启动 NTP 服务：
 
       ```bash
-      /etc/init.d/ntpd start
+      service ntpd start
       ```