diff --git a/test/core-test/src/test/java/com/alibaba/nacos/test/core/SnowFlowerIdGenerator_ITCase.java b/test/core-test/src/test/java/com/alibaba/nacos/test/core/SnowFlowerIdGeneratorCoreITCase.java
similarity index 85%
rename from test/core-test/src/test/java/com/alibaba/nacos/test/core/SnowFlowerIdGenerator_ITCase.java
rename to test/core-test/src/test/java/com/alibaba/nacos/test/core/SnowFlowerIdGeneratorCoreITCase.java
index f977e1bba..3929192d2 100644
--- a/test/core-test/src/test/java/com/alibaba/nacos/test/core/SnowFlowerIdGenerator_ITCase.java
+++ b/test/core-test/src/test/java/com/alibaba/nacos/test/core/SnowFlowerIdGeneratorCoreITCase.java
@@ -24,12 +24,16 @@ import org.springframework.core.env.StandardEnvironment;
 import static org.junit.jupiter.api.Assertions.assertNotEquals;
 
 /**
+ * Integration test case for validating unique ID generation using SnowFlowerIdGenerator with distinct initializations
+ * and assertions for uniqueness.
+ *
  * @author <a href="mailto:liaochuntao@live.com">liaochuntao</a>
  */
-class SnowFlowerIdGenerator_ITCase {
+@SuppressWarnings("checkstyle:AbbreviationAsWordInName")
+class SnowFlowerIdGeneratorCoreITCase {
     
     @Test
-    void test_idGenerator() {
+    void testIdGenerator() {
         EnvUtil.setEnvironment(new StandardEnvironment());
         SnowFlowerIdGenerator generator1 = new SnowFlowerIdGenerator();
         SnowFlowerIdGenerator generator2 = new SnowFlowerIdGenerator();
diff --git a/test/core-test/src/test/java/com/alibaba/nacos/test/core/cluster/MemberLookup_ITCase.java b/test/core-test/src/test/java/com/alibaba/nacos/test/core/cluster/MemberLookupCoreITCase.java
similarity index 84%
rename from test/core-test/src/test/java/com/alibaba/nacos/test/core/cluster/MemberLookup_ITCase.java
rename to test/core-test/src/test/java/com/alibaba/nacos/test/core/cluster/MemberLookupCoreITCase.java
index 2145ed40c..8622d5812 100644
--- a/test/core-test/src/test/java/com/alibaba/nacos/test/core/cluster/MemberLookup_ITCase.java
+++ b/test/core-test/src/test/java/com/alibaba/nacos/test/core/cluster/MemberLookupCoreITCase.java
@@ -43,17 +43,22 @@ import java.util.Arrays;
 import java.util.Map;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertInstanceOf;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
 /**
+ * Integration test case for Member Lookup functionality, validating different lookup strategies: file configuration,
+ * standalone mode, and address server lookup.
+ *
  * @author <a href="mailto:liaochuntao@live.com">liaochuntao</a>
  */
+@SuppressWarnings("checkstyle:AbbreviationAsWordInName")
 @TestMethodOrder(MethodName.class)
-class MemberLookup_ITCase {
+class MemberLookupCoreITCase {
     
-    static final String path = Paths.get(System.getProperty("user.home"), "/member_look").toString();
+    private final String path = Paths.get(System.getProperty("user.home"), "/member_look").toString();
     
-    static final String name = "cluster.conf";
+    private final String name = "cluster.conf";
     
     ServerMemberManager memberManager;
     
@@ -70,7 +75,8 @@ class MemberLookup_ITCase {
         File file = Paths.get(path, "conf", name).toFile();
         DiskUtils.touch(file);
         String ip = InetUtils.getSelfIP();
-        DiskUtils.writeFile(file, (ip + ":8848," + ip + ":8847," + ip + ":8849").getBytes(StandardCharsets.UTF_8), false);
+        DiskUtils.writeFile(file, (ip + ":8848," + ip + ":8847," + ip + ":8849").getBytes(StandardCharsets.UTF_8),
+                false);
         
         try {
             memberManager = new ServerMemberManager(new MockServletContext());
@@ -90,19 +96,19 @@ class MemberLookup_ITCase {
     }
     
     @Test
-    void test_a_lookup_file_config() throws Exception {
+    void testLookupFileConfig() throws Exception {
         try {
             LookupFactory.createLookUp(memberManager);
         } catch (Throwable ignore) {
         }
         MemberLookup lookup = LookupFactory.getLookUp();
         System.out.println(lookup);
-        assertTrue(lookup instanceof FileConfigMemberLookup);
+        assertInstanceOf(FileConfigMemberLookup.class, lookup);
         func(lookup);
     }
     
     @Test
-    void test_b_lookup_standalone() throws Exception {
+    void testLookupStandalone() throws Exception {
         EnvUtil.setIsStandalone(true);
         try {
             LookupFactory.createLookUp(memberManager);
@@ -113,11 +119,11 @@ class MemberLookup_ITCase {
         }
         MemberLookup lookup = LookupFactory.getLookUp();
         System.out.println(lookup);
-        assertTrue(lookup instanceof StandaloneMemberLookup);
+        assertInstanceOf(StandaloneMemberLookup.class, lookup);
     }
     
     @Test
-    void test_c_lookup_address_server() throws Exception {
+    void testLookupAddressServer() throws Exception {
         EnvUtil.setIsStandalone(false);
         System.out.println(EnvUtil.getClusterConfFilePath());
         DiskUtils.deleteFile(Paths.get(path, "conf").toString(), "cluster.conf");
@@ -128,7 +134,7 @@ class MemberLookup_ITCase {
         }
         MemberLookup lookup = LookupFactory.getLookUp();
         System.out.println(lookup);
-        assertTrue(lookup instanceof AddressServerMemberLookup);
+        assertInstanceOf(AddressServerMemberLookup.class, lookup);
         try {
             func(lookup);
         } catch (NacosException e) {
diff --git a/test/core-test/src/test/java/com/alibaba/nacos/test/core/cluster/ServerMemberManager_ITCase.java b/test/core-test/src/test/java/com/alibaba/nacos/test/core/cluster/ServerMemberManagerCoreITCase.java
similarity index 96%
rename from test/core-test/src/test/java/com/alibaba/nacos/test/core/cluster/ServerMemberManager_ITCase.java
rename to test/core-test/src/test/java/com/alibaba/nacos/test/core/cluster/ServerMemberManagerCoreITCase.java
index 53dc85b4a..8a13bb29a 100644
--- a/test/core-test/src/test/java/com/alibaba/nacos/test/core/cluster/ServerMemberManager_ITCase.java
+++ b/test/core-test/src/test/java/com/alibaba/nacos/test/core/cluster/ServerMemberManagerCoreITCase.java
@@ -57,9 +57,10 @@ import static org.junit.jupiter.api.Assertions.assertTrue;
  *
  * @author <a href="mailto:liaochuntao@live.com">liaochuntao</a>
  */
+// todo fix
+@SuppressWarnings("checkstyle:AbbreviationAsWordInName")
 @TestMethodOrder(MethodName.class)
-        // todo fix
-class ServerMemberManager_ITCase {
+class ServerMemberManagerCoreITCase {
     
     private ServerMemberManager memberManager;
     
@@ -148,7 +149,8 @@ class ServerMemberManager_ITCase {
             @Override
             public void onEvent(MembersChangeEvent event) {
                 System.out.println(event);
-                healthMembers.set(MemberUtil.selectTargetMembers(event.getMembers(), member -> !NodeState.DOWN.equals(member.getState())));
+                healthMembers.set(MemberUtil.selectTargetMembers(event.getMembers(),
+                        member -> !NodeState.DOWN.equals(member.getState())));
                 if (first.getCount() == 1) {
                     first.countDown();
                     return;
@@ -186,7 +188,7 @@ class ServerMemberManager_ITCase {
         member.setState(NodeState.DOWN);
         assertTrue(memberManager.update(member));
         
-        second.await();//fix blocking
+        second.await(); //fix blocking
         copy = new HashSet<>(firstMemberList);
         copy.removeAll(healthMembers.get());
         assertEquals(3, copy.size());
diff --git a/test/core-test/src/test/java/com/alibaba/nacos/test/core/code/ControllerMethodsCache_ITCase.java b/test/core-test/src/test/java/com/alibaba/nacos/test/core/code/ControllerMethodsCacheCoreITCase.java
similarity index 93%
rename from test/core-test/src/test/java/com/alibaba/nacos/test/core/code/ControllerMethodsCache_ITCase.java
rename to test/core-test/src/test/java/com/alibaba/nacos/test/core/code/ControllerMethodsCacheCoreITCase.java
index 738e235c8..64f8e167c 100644
--- a/test/core-test/src/test/java/com/alibaba/nacos/test/core/code/ControllerMethodsCache_ITCase.java
+++ b/test/core-test/src/test/java/com/alibaba/nacos/test/core/code/ControllerMethodsCacheCoreITCase.java
@@ -31,10 +31,14 @@ import java.util.Map;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 
 /**
+ * Integration test case for validating ControllerMethodsCache functionality,ensuring correct method retrieval based on
+ * different request parameters.
+ *
  * @author horizonzy
  * @since 1.3.2
  */
-class ControllerMethodsCache_ITCase {
+@SuppressWarnings("checkstyle:AbbreviationAsWordInName")
+class ControllerMethodsCacheCoreITCase {
     
     private ControllerMethodsCache methodsCache;
     
diff --git a/test/core-test/src/test/java/com/alibaba/nacos/test/smoke/nacosSmoke_ITCase.java b/test/core-test/src/test/java/com/alibaba/nacos/test/smoke/NacosSmokeCoreITCase.java
similarity index 86%
rename from test/core-test/src/test/java/com/alibaba/nacos/test/smoke/nacosSmoke_ITCase.java
rename to test/core-test/src/test/java/com/alibaba/nacos/test/smoke/NacosSmokeCoreITCase.java
index b1b7a23b4..1b55a1d96 100644
--- a/test/core-test/src/test/java/com/alibaba/nacos/test/smoke/nacosSmoke_ITCase.java
+++ b/test/core-test/src/test/java/com/alibaba/nacos/test/smoke/NacosSmokeCoreITCase.java
@@ -21,9 +21,10 @@ import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
-class nacosSmoke_ITCase {
+@SuppressWarnings("checkstyle:AbbreviationAsWordInName")
+class NacosSmokeCoreITCase {
     
-    private static Logger logger = Logger.getLogger(nacosSmoke_ITCase.class);
+    private static Logger logger = Logger.getLogger(NacosSmokeCoreITCase.class);
     
     @BeforeEach
     void setUp() {