diff --git a/content/zh-cn/docs/tutorials/configuration/updating-configuration-via-a-configmap.md b/content/zh-cn/docs/tutorials/configuration/updating-configuration-via-a-configmap.md
index 6f01e65666..4c765ef3bb 100644
--- a/content/zh-cn/docs/tutorials/configuration/updating-configuration-via-a-configmap.md
+++ b/content/zh-cn/docs/tutorials/configuration/updating-configuration-via-a-configmap.md
@@ -780,7 +780,7 @@ Access the service.
 
 ```shell
 # 此命令将在后台运行
-kubectl port-forward service/configmap-sidecar-service 8081:80 &
+kubectl port-forward service/configmap-sidecar-service 8081:8081 &
 ```
 
 访问服务：