diff --git a/client/src/main/java/com/alibaba/nacos/client/naming/core/HostReactor.java b/client/src/main/java/com/alibaba/nacos/client/naming/core/HostReactor.java
index 60040a0e4223cc442a92f8a3f36d47c35f299d13..97ec0dfa0b268388fa3dbfac3304ebd3af19f79b 100644
--- a/client/src/main/java/com/alibaba/nacos/client/naming/core/HostReactor.java
+++ b/client/src/main/java/com/alibaba/nacos/client/naming/core/HostReactor.java
@@ -162,7 +162,11 @@ public class HostReactor implements Closeable {
      */
     public ServiceInfo processServiceJson(String json) {
         ServiceInfo serviceInfo = JacksonUtils.toObj(json, ServiceInfo.class);
-        ServiceInfo oldService = serviceInfoMap.get(serviceInfo.getKey());
+        String serviceKey = serviceInfo.getKey();
+        if (serviceKey == null) {
+            return null;
+        }
+        ServiceInfo oldService = serviceInfoMap.get(serviceKey);
         
         if (pushEmptyProtection && !serviceInfo.validate()) {
             //empty or error push, just ignore