diff --git a/common/src/main/java/org/apache/rocketmq/common/utils/NameServerAddressUtils.java b/common/src/main/java/org/apache/rocketmq/common/utils/NameServerAddressUtils.java
index 68f883935ae..dd6d8d5e348 100644
--- a/common/src/main/java/org/apache/rocketmq/common/utils/NameServerAddressUtils.java
+++ b/common/src/main/java/org/apache/rocketmq/common/utils/NameServerAddressUtils.java
@@ -28,11 +28,11 @@ public static String getNameServerAddresses() {
     }
 
     public static boolean validateInstanceEndpoint(String endpoint) {
-        return INST_ENDPOINT_PATTERN.matcher(endpoint).matches();
+        return StringUtils.isNotEmpty(endpoint) && INST_ENDPOINT_PATTERN.matcher(endpoint).matches();
     }
 
     public static String parseInstanceIdFromEndpoint(String endpoint) {
-        if (StringUtils.isEmpty(endpoint)) {
+        if (!validateInstanceEndpoint(endpoint)) {
             return null;
         }
         return endpoint.substring(endpoint.lastIndexOf("/") + 1, endpoint.indexOf('.'));
diff --git a/common/src/test/java/org/apache/rocketmq/common/utils/NameServerAddressUtilsTest.java b/common/src/test/java/org/apache/rocketmq/common/utils/NameServerAddressUtilsTest.java
index 38cffdba9dd..f107b87f240 100644
--- a/common/src/test/java/org/apache/rocketmq/common/utils/NameServerAddressUtilsTest.java
+++ b/common/src/test/java/org/apache/rocketmq/common/utils/NameServerAddressUtilsTest.java
@@ -1,59 +1,63 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.apache.rocketmq.common.utils;
-
-import org.junit.Test;
-
-import static org.assertj.core.api.Assertions.assertThat;
-
-public class NameServerAddressUtilsTest {
-
-    private static String endpoint1 = "http://127.0.0.1:9876";
-    private static String endpoint2 = "127.0.0.1:9876";
-    private static String endpoint3
-        = "http://MQ_INST_123456789_BXXUzaee.xxx:80";
-    private static String endpoint4 = "MQ_INST_123456789_BXXUzaee.xxx:80";
-
-    @Test
-    public void testValidateInstanceEndpoint() {
-        assertThat(NameServerAddressUtils.validateInstanceEndpoint(endpoint1)).isEqualTo(false);
-        assertThat(NameServerAddressUtils.validateInstanceEndpoint(endpoint2)).isEqualTo(false);
-        assertThat(NameServerAddressUtils.validateInstanceEndpoint(endpoint3)).isEqualTo(true);
-        assertThat(NameServerAddressUtils.validateInstanceEndpoint(endpoint4)).isEqualTo(true);
-    }
-
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.rocketmq.common.utils;
+
+import org.junit.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class NameServerAddressUtilsTest {
+
+    private static String endpoint1 = "http://127.0.0.1:9876";
+    private static String endpoint2 = "127.0.0.1:9876";
+    private static String endpoint3
+        = "http://MQ_INST_123456789_BXXUzaee.xxx:80";
+    private static String endpoint4 = "MQ_INST_123456789_BXXUzaee.xxx:80";
+
+    @Test
+    public void testValidateInstanceEndpoint() {
+        assertThat(NameServerAddressUtils.validateInstanceEndpoint(null)).isEqualTo(false);
+        assertThat(NameServerAddressUtils.validateInstanceEndpoint(endpoint1)).isEqualTo(false);
+        assertThat(NameServerAddressUtils.validateInstanceEndpoint(endpoint2)).isEqualTo(false);
+        assertThat(NameServerAddressUtils.validateInstanceEndpoint(endpoint3)).isEqualTo(true);
+        assertThat(NameServerAddressUtils.validateInstanceEndpoint(endpoint4)).isEqualTo(true);
+    }
+
     @Test
     public void testParseInstanceIdFromEndpoint() {
+        assertThat(NameServerAddressUtils.parseInstanceIdFromEndpoint(null)).isNull();
         assertThat(NameServerAddressUtils.parseInstanceIdFromEndpoint(endpoint3)).isEqualTo(
             "MQ_INST_123456789_BXXUzaee");
-        assertThat(NameServerAddressUtils.parseInstanceIdFromEndpoint(endpoint4)).isEqualTo(
-            "MQ_INST_123456789_BXXUzaee");
-    }
-
-    @Test
-    public void testGetNameSrvAddrFromNamesrvEndpoint() {
-        assertThat(NameServerAddressUtils.getNameSrvAddrFromNamesrvEndpoint(endpoint1))
-            .isEqualTo("127.0.0.1:9876");
-        assertThat(NameServerAddressUtils.getNameSrvAddrFromNamesrvEndpoint(endpoint2))
-            .isEqualTo("127.0.0.1:9876");
-        assertThat(NameServerAddressUtils.getNameSrvAddrFromNamesrvEndpoint(endpoint3))
-            .isEqualTo("MQ_INST_123456789_BXXUzaee.xxx:80");
-        assertThat(NameServerAddressUtils.getNameSrvAddrFromNamesrvEndpoint(endpoint4))
-            .isEqualTo("MQ_INST_123456789_BXXUzaee.xxx:80");
-    }
-}
+        assertThat(NameServerAddressUtils.parseInstanceIdFromEndpoint(endpoint4)).isEqualTo(
+            "MQ_INST_123456789_BXXUzaee");
+        assertThat(NameServerAddressUtils.parseInstanceIdFromEndpoint(endpoint1)).isNull();
+        assertThat(NameServerAddressUtils.parseInstanceIdFromEndpoint(endpoint2)).isNull();
+    }
+
+    @Test
+    public void testGetNameSrvAddrFromNamesrvEndpoint() {
+        assertThat(NameServerAddressUtils.getNameSrvAddrFromNamesrvEndpoint(endpoint1))
+            .isEqualTo("127.0.0.1:9876");
+        assertThat(NameServerAddressUtils.getNameSrvAddrFromNamesrvEndpoint(endpoint2))
+            .isEqualTo("127.0.0.1:9876");
+        assertThat(NameServerAddressUtils.getNameSrvAddrFromNamesrvEndpoint(endpoint3))
+            .isEqualTo("MQ_INST_123456789_BXXUzaee.xxx:80");
+        assertThat(NameServerAddressUtils.getNameSrvAddrFromNamesrvEndpoint(endpoint4))
+            .isEqualTo("MQ_INST_123456789_BXXUzaee.xxx:80");
+    }
+}