diff --git a/spring-cloud-starter-tencent-polaris-config/src/main/resources/META-INF/additional-spring-configuration-metadata.json b/spring-cloud-starter-tencent-polaris-config/src/main/resources/META-INF/additional-spring-configuration-metadata.json
index 66945189c..f3dd3fe3d 100644
--- a/spring-cloud-starter-tencent-polaris-config/src/main/resources/META-INF/additional-spring-configuration-metadata.json
+++ b/spring-cloud-starter-tencent-polaris-config/src/main/resources/META-INF/additional-spring-configuration-metadata.json
@@ -64,7 +64,7 @@
       "name": "spring.cloud.polaris.config.local-file-root-path",
       "type": "java.lang.String",
       "defaultValue": "./polaris/backup/config",
-      "description": "Where to load config file, polaris or local."
+      "description": "The root path of config files, only used in local mode."
     }
   ]
 }
diff --git a/spring-cloud-tencent-examples/polaris-config-example/src/main/resources/bootstrap.yml b/spring-cloud-tencent-examples/polaris-config-example/src/main/resources/bootstrap.yml
index b8a222899..88ffbba8a 100644
--- a/spring-cloud-tencent-examples/polaris-config-example/src/main/resources/bootstrap.yml
+++ b/spring-cloud-tencent-examples/polaris-config-example/src/main/resources/bootstrap.yml
@@ -9,7 +9,7 @@ spring:
       namespace: default
       config:
         auto-refresh: true # auto refresh when config file changed
-        data-source: local # config data source default is polaris.
+        #        data-source: local # config data source default is polaris.
         #        local-file-root-path: # set root path for reading config file, when in local data source
         groups:
           - name: ${spring.application.name} # group name