diff --git a/zh-cn/application-dev/reference/apis/js-apis-service-extension-ability.md b/zh-cn/application-dev/reference/apis/js-apis-service-extension-ability.md
index 06d3dd5de92d06ce2c417213d7cde1da87116e1e..1a99c38a34b9863c991e63ba097c5c0e70c07cad 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-service-extension-ability.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-service-extension-ability.md
@@ -202,6 +202,8 @@ onReconnect(want: Want): void;
 
 onConfigurationUpdated(config: Configuration): void;
 
+当Extension更新配置信息时调用。
+
 **系统能力**：SystemCapability.Ability.AbilityRuntime.Core
 
 **系统API**: 此接口为系统接口，三方应用不支持调用。