diff --git a/spring-cloud-alibaba-nacos-config/src/main/java/org/springframework/cloud/alibaba/nacos/NacosConfigProperties.java b/spring-cloud-alibaba-nacos-config/src/main/java/org/springframework/cloud/alibaba/nacos/NacosConfigProperties.java
index eaa9dfa6..19d5721f 100644
--- a/spring-cloud-alibaba-nacos-config/src/main/java/org/springframework/cloud/alibaba/nacos/NacosConfigProperties.java
+++ b/spring-cloud-alibaba-nacos-config/src/main/java/org/springframework/cloud/alibaba/nacos/NacosConfigProperties.java
@@ -272,8 +272,17 @@ public class NacosConfigProperties {
 	}
 
 	public static class Config {
+		/**
+		 * the data id of extended configuration
+		 */
 		private String dataId;
+		/**
+		 * the group of extended configuration, the default value is DEFAULT_GROUP
+		 */
 		private String group = "DEFAULT_GROUP";
+		/**
+		 * whether to support dynamic refresh, the default does not support .
+		 */
 		private boolean refresh = false;
 
 		public String getDataId() {
diff --git a/spring-cloud-alibaba-nacos-config/src/main/java/org/springframework/cloud/alibaba/nacos/client/NacosPropertySourceLocator.java b/spring-cloud-alibaba-nacos-config/src/main/java/org/springframework/cloud/alibaba/nacos/client/NacosPropertySourceLocator.java
index 6bc45ae4..68b1981d 100644
--- a/spring-cloud-alibaba-nacos-config/src/main/java/org/springframework/cloud/alibaba/nacos/client/NacosPropertySourceLocator.java
+++ b/spring-cloud-alibaba-nacos-config/src/main/java/org/springframework/cloud/alibaba/nacos/client/NacosPropertySourceLocator.java
@@ -33,6 +33,7 @@ import com.alibaba.nacos.api.config.ConfigService;
 
 /**
  * @author xiaojing
+ * @author pbting
  */
 @Order(0)
 public class NacosPropertySourceLocator implements PropertySourceLocator {
diff --git a/spring-cloud-alibaba-nacos-config/src/main/java/org/springframework/cloud/alibaba/nacos/refresh/NacosContextRefresher.java b/spring-cloud-alibaba-nacos-config/src/main/java/org/springframework/cloud/alibaba/nacos/refresh/NacosContextRefresher.java
index 86b7b2a4..4574ede2 100644
--- a/spring-cloud-alibaba-nacos-config/src/main/java/org/springframework/cloud/alibaba/nacos/refresh/NacosContextRefresher.java
+++ b/spring-cloud-alibaba-nacos-config/src/main/java/org/springframework/cloud/alibaba/nacos/refresh/NacosContextRefresher.java
@@ -96,6 +96,7 @@ public class NacosContextRefresher
 		if (refreshProperties.isEnabled()) {
 			for (NacosPropertySource nacosPropertySource : nacosPropertySourceRepository
 					.getAll()) {
+
 				if (!nacosPropertySource.isRefreshable()) {
 					continue;
 				}