diff --git a/naming/src/main/java/com/alibaba/nacos/naming/core/v2/service/ClientOperationService.java b/naming/src/main/java/com/alibaba/nacos/naming/core/v2/service/ClientOperationService.java
index 8e35fe2285b..ad9cdc863b1 100644
--- a/naming/src/main/java/com/alibaba/nacos/naming/core/v2/service/ClientOperationService.java
+++ b/naming/src/main/java/com/alibaba/nacos/naming/core/v2/service/ClientOperationService.java
@@ -24,6 +24,8 @@
 import com.alibaba.nacos.naming.pojo.Subscriber;
 import com.alibaba.nacos.naming.constants.Constants;
 
+import java.util.Map;
+
 /**
  * Client operation service.
  *
@@ -79,17 +81,18 @@ default void unsubscribeService(Service service, Subscriber subscriber, String c
      */
     default InstancePublishInfo getPublishInfo(Instance instance) {
         InstancePublishInfo result = new InstancePublishInfo(instance.getIp(), instance.getPort());
+        Map<String, Object> extendDatum = result.getExtendDatum();
         if (null != instance.getMetadata() && !instance.getMetadata().isEmpty()) {
-            result.getExtendDatum().putAll(instance.getMetadata());
+            extendDatum.putAll(instance.getMetadata());
         }
         if (StringUtils.isNotEmpty(instance.getInstanceId())) {
-            result.getExtendDatum().put(Constants.CUSTOM_INSTANCE_ID, instance.getInstanceId());
+            extendDatum.put(Constants.CUSTOM_INSTANCE_ID, instance.getInstanceId());
         }
         if (Constants.DEFAULT_INSTANCE_WEIGHT != instance.getWeight()) {
-            result.getExtendDatum().put(Constants.PUBLISH_INSTANCE_WEIGHT, instance.getWeight());
+            extendDatum.put(Constants.PUBLISH_INSTANCE_WEIGHT, instance.getWeight());
         }
         if (!instance.isEnabled()) {
-            result.getExtendDatum().put(Constants.PUBLISH_INSTANCE_ENABLE, instance.isEnabled());
+            extendDatum.put(Constants.PUBLISH_INSTANCE_ENABLE, instance.isEnabled());
         }
         String clusterName = StringUtils.isBlank(instance.getClusterName()) ? UtilsAndCommons.DEFAULT_CLUSTER_NAME
                 : instance.getClusterName();