diff --git a/dubbo-common/src/main/java/org/apache/dubbo/config/ConfigCenterConfig.java b/dubbo-common/src/main/java/org/apache/dubbo/config/ConfigCenterConfig.java
index 0e01609aac..0c3b443bb1 100644
--- a/dubbo-common/src/main/java/org/apache/dubbo/config/ConfigCenterConfig.java
+++ b/dubbo-common/src/main/java/org/apache/dubbo/config/ConfigCenterConfig.java
@@ -73,7 +73,7 @@ public class ConfigCenterConfig extends AbstractConfig {
     private String configFile = CommonConstants.DEFAULT_DUBBO_PROPERTIES;
 
     /* the .properties file under 'configFile' is global shared while .properties under this one is limited only to this application
-    */
+     */
     private String appConfigFile;
 
     /* If the Config Center product you use have some special parameters that is not covered by this class, you can add it to here.
diff --git a/dubbo-config/dubbo-config-spring/src/test/java/org/apache/dubbo/config/spring/SimpleRegistryService.java b/dubbo-config/dubbo-config-spring/src/test/java/org/apache/dubbo/config/spring/SimpleRegistryService.java
index c9b7ac75fb..53ed1b99a0 100644
--- a/dubbo-config/dubbo-config-spring/src/test/java/org/apache/dubbo/config/spring/SimpleRegistryService.java
+++ b/dubbo-config/dubbo-config-spring/src/test/java/org/apache/dubbo/config/spring/SimpleRegistryService.java
@@ -17,8 +17,6 @@
 package org.apache.dubbo.config.spring;
 
 import org.apache.dubbo.common.URL;
-import org.apache.dubbo.common.logger.Logger;
-import org.apache.dubbo.common.logger.LoggerFactory;
 import org.apache.dubbo.common.utils.CollectionUtils;
 import org.apache.dubbo.common.utils.NetUtils;
 import org.apache.dubbo.common.utils.UrlUtils;
@@ -36,7 +34,6 @@ import java.util.concurrent.ConcurrentMap;
  */
 public class SimpleRegistryService extends AbstractRegistryService {
 
-    private final static Logger logger = LoggerFactory.getLogger(SimpleRegistryService.class);
     private final ConcurrentMap<String, ConcurrentMap<String, URL>> remoteRegistered = new ConcurrentHashMap<String, ConcurrentMap<String, URL>>();
     private final ConcurrentMap<String, ConcurrentMap<String, NotifyListener>> remoteListeners = new ConcurrentHashMap<String, ConcurrentMap<String, NotifyListener>>();
     private List<String> registries;
@@ -139,4 +136,4 @@ public class SimpleRegistryService extends AbstractRegistryService {
         this.registries = registries;
     }
 
-}
\ No newline at end of file
+}
diff --git a/dubbo-metadata/dubbo-metadata-api/src/test/java/org/apache/dubbo/metadata/test/JTestMetadataReport4Test.java b/dubbo-metadata/dubbo-metadata-api/src/test/java/org/apache/dubbo/metadata/test/JTestMetadataReport4Test.java
index 34ebce39c3..60f7c7ccfa 100644
--- a/dubbo-metadata/dubbo-metadata-api/src/test/java/org/apache/dubbo/metadata/test/JTestMetadataReport4Test.java
+++ b/dubbo-metadata/dubbo-metadata-api/src/test/java/org/apache/dubbo/metadata/test/JTestMetadataReport4Test.java
@@ -17,8 +17,6 @@
 package org.apache.dubbo.metadata.test;
 
 import org.apache.dubbo.common.URL;
-import org.apache.dubbo.common.logger.Logger;
-import org.apache.dubbo.common.logger.LoggerFactory;
 import org.apache.dubbo.metadata.report.identifier.KeyTypeEnum;
 import org.apache.dubbo.metadata.report.identifier.MetadataIdentifier;
 import org.apache.dubbo.metadata.report.identifier.ServiceMetadataIdentifier;
@@ -37,9 +35,6 @@ import static org.apache.dubbo.common.constants.CommonConstants.SIDE_KEY;
  */
 public class JTestMetadataReport4Test extends AbstractMetadataReport {
 
-    private final static Logger logger = LoggerFactory.getLogger(JTestMetadataReport4Test.class);
-
-
     public JTestMetadataReport4Test(URL url) {
         super(url);
     }
diff --git a/dubbo-metadata/dubbo-metadata-report-consul/src/main/java/org/apache/dubbo/metadata/store/consul/ConsulMetadataReport.java b/dubbo-metadata/dubbo-metadata-report-consul/src/main/java/org/apache/dubbo/metadata/store/consul/ConsulMetadataReport.java
index c1e0a309be..2f1600302b 100644
--- a/dubbo-metadata/dubbo-metadata-report-consul/src/main/java/org/apache/dubbo/metadata/store/consul/ConsulMetadataReport.java
+++ b/dubbo-metadata/dubbo-metadata-report-consul/src/main/java/org/apache/dubbo/metadata/store/consul/ConsulMetadataReport.java
@@ -18,8 +18,6 @@
 package org.apache.dubbo.metadata.store.consul;
 
 import org.apache.dubbo.common.URL;
-import org.apache.dubbo.common.logger.Logger;
-import org.apache.dubbo.common.logger.LoggerFactory;
 import org.apache.dubbo.common.utils.StringUtils;
 import org.apache.dubbo.metadata.report.identifier.BaseMetadataIdentifier;
 import org.apache.dubbo.metadata.report.identifier.KeyTypeEnum;
@@ -42,7 +40,6 @@ import java.util.List;
  * metadata report impl for consul
  */
 public class ConsulMetadataReport extends AbstractMetadataReport {
-    private static final Logger logger = LoggerFactory.getLogger(ConsulMetadataReport.class);
     private static final int DEFAULT_PORT = 8500;
 
     private ConsulClient client;
diff --git a/dubbo-metadata/dubbo-metadata-report-etcd/src/main/java/org/apache/dubbo/metadata/store/etcd/EtcdMetadataReport.java b/dubbo-metadata/dubbo-metadata-report-etcd/src/main/java/org/apache/dubbo/metadata/store/etcd/EtcdMetadataReport.java
index a80c6e83dd..7d3eab9b05 100644
--- a/dubbo-metadata/dubbo-metadata-report-etcd/src/main/java/org/apache/dubbo/metadata/store/etcd/EtcdMetadataReport.java
+++ b/dubbo-metadata/dubbo-metadata-report-etcd/src/main/java/org/apache/dubbo/metadata/store/etcd/EtcdMetadataReport.java
@@ -34,8 +34,6 @@
 package org.apache.dubbo.metadata.store.etcd;
 
 import org.apache.dubbo.common.URL;
-import org.apache.dubbo.common.logger.Logger;
-import org.apache.dubbo.common.logger.LoggerFactory;
 import org.apache.dubbo.common.utils.StringUtils;
 import org.apache.dubbo.metadata.report.identifier.BaseMetadataIdentifier;
 import org.apache.dubbo.metadata.report.identifier.KeyTypeEnum;
@@ -58,8 +56,6 @@ import static org.apache.dubbo.common.constants.CommonConstants.PATH_SEPARATOR;
  */
 public class EtcdMetadataReport extends AbstractMetadataReport {
 
-    private final static Logger logger = LoggerFactory.getLogger(EtcdMetadataReport.class);
-
     private final String root;
 
     /**
diff --git a/dubbo-metadata/dubbo-metadata-report-nacos/src/main/java/org/apache/dubbo/metadata/store/nacos/NacosMetadataReport.java b/dubbo-metadata/dubbo-metadata-report-nacos/src/main/java/org/apache/dubbo/metadata/store/nacos/NacosMetadataReport.java
index 734f7a01a2..69024e1e3c 100644
--- a/dubbo-metadata/dubbo-metadata-report-nacos/src/main/java/org/apache/dubbo/metadata/store/nacos/NacosMetadataReport.java
+++ b/dubbo-metadata/dubbo-metadata-report-nacos/src/main/java/org/apache/dubbo/metadata/store/nacos/NacosMetadataReport.java
@@ -18,8 +18,6 @@
 package org.apache.dubbo.metadata.store.nacos;
 
 import org.apache.dubbo.common.URL;
-import org.apache.dubbo.common.logger.Logger;
-import org.apache.dubbo.common.logger.LoggerFactory;
 import org.apache.dubbo.common.utils.StringUtils;
 import org.apache.dubbo.metadata.report.identifier.BaseMetadataIdentifier;
 import org.apache.dubbo.metadata.report.identifier.KeyTypeEnum;
@@ -67,8 +65,6 @@ import static org.apache.dubbo.common.constants.RemotingConstants.BACKUP_KEY;
  */
 public class NacosMetadataReport extends AbstractMetadataReport {
 
-    private static final Logger logger = LoggerFactory.getLogger(NacosMetadataReport.class);
-
     private ConfigService configService;
 
     /**
diff --git a/dubbo-metadata/dubbo-metadata-report-redis/src/main/java/org/apache/dubbo/metadata/store/redis/RedisMetadataReport.java b/dubbo-metadata/dubbo-metadata-report-redis/src/main/java/org/apache/dubbo/metadata/store/redis/RedisMetadataReport.java
index c00be049b7..4744926d7b 100644
--- a/dubbo-metadata/dubbo-metadata-report-redis/src/main/java/org/apache/dubbo/metadata/store/redis/RedisMetadataReport.java
+++ b/dubbo-metadata/dubbo-metadata-report-redis/src/main/java/org/apache/dubbo/metadata/store/redis/RedisMetadataReport.java
@@ -17,8 +17,6 @@
 package org.apache.dubbo.metadata.store.redis;
 
 import org.apache.dubbo.common.URL;
-import org.apache.dubbo.common.logger.Logger;
-import org.apache.dubbo.common.logger.LoggerFactory;
 import org.apache.dubbo.common.utils.StringUtils;
 import org.apache.dubbo.metadata.report.identifier.BaseMetadataIdentifier;
 import org.apache.dubbo.metadata.report.identifier.KeyTypeEnum;
@@ -53,7 +51,6 @@ import static org.apache.dubbo.metadata.MetadataConstants.META_DATA_STORE_TAG;
 public class RedisMetadataReport extends AbstractMetadataReport {
 
     private final static String REDIS_DATABASE_KEY = "database";
-    private final static Logger logger = LoggerFactory.getLogger(RedisMetadataReport.class);
 
     JedisPool pool;
     Set<HostAndPort> jedisClusterNodes;
diff --git a/dubbo-metadata/dubbo-metadata-report-zookeeper/src/main/java/org/apache/dubbo/metadata/store/zookeeper/ZookeeperMetadataReport.java b/dubbo-metadata/dubbo-metadata-report-zookeeper/src/main/java/org/apache/dubbo/metadata/store/zookeeper/ZookeeperMetadataReport.java
index aea0ebba88..52fd4a8f97 100644
--- a/dubbo-metadata/dubbo-metadata-report-zookeeper/src/main/java/org/apache/dubbo/metadata/store/zookeeper/ZookeeperMetadataReport.java
+++ b/dubbo-metadata/dubbo-metadata-report-zookeeper/src/main/java/org/apache/dubbo/metadata/store/zookeeper/ZookeeperMetadataReport.java
@@ -18,8 +18,6 @@ package org.apache.dubbo.metadata.store.zookeeper;
 
 import com.google.gson.Gson;
 import org.apache.dubbo.common.URL;
-import org.apache.dubbo.common.logger.Logger;
-import org.apache.dubbo.common.logger.LoggerFactory;
 import org.apache.dubbo.common.utils.CollectionUtils;
 import org.apache.dubbo.common.utils.StringUtils;
 import org.apache.dubbo.metadata.MappingChangedEvent;
@@ -53,8 +51,6 @@ import static org.apache.dubbo.common.constants.CommonConstants.PATH_SEPARATOR;
  */
 public class ZookeeperMetadataReport extends AbstractMetadataReport {
 
-    private final static Logger logger = LoggerFactory.getLogger(ZookeeperMetadataReport.class);
-
     private final String root;
 
     final ZookeeperClient zkClient;
diff --git a/dubbo-registry/dubbo-registry-default/src/main/java/org/apache/dubbo/registry/dubbo/DubboRegistry.java b/dubbo-registry/dubbo-registry-default/src/main/java/org/apache/dubbo/registry/dubbo/DubboRegistry.java
index ef9238ee04..2b6f0d888c 100644
--- a/dubbo-registry/dubbo-registry-default/src/main/java/org/apache/dubbo/registry/dubbo/DubboRegistry.java
+++ b/dubbo-registry/dubbo-registry-default/src/main/java/org/apache/dubbo/registry/dubbo/DubboRegistry.java
@@ -18,8 +18,6 @@ package org.apache.dubbo.registry.dubbo;
 
 import org.apache.dubbo.common.URL;
 import org.apache.dubbo.common.Version;
-import org.apache.dubbo.common.logger.Logger;
-import org.apache.dubbo.common.logger.LoggerFactory;
 import org.apache.dubbo.common.utils.ExecutorUtil;
 import org.apache.dubbo.common.utils.NamedThreadFactory;
 import org.apache.dubbo.common.utils.NetUtils;
@@ -43,8 +41,6 @@ import static org.apache.dubbo.registry.Constants.REGISTRY_RECONNECT_PERIOD_KEY;
  */
 public class DubboRegistry extends FailbackRegistry {
 
-    private final static Logger logger = LoggerFactory.getLogger(DubboRegistry.class);
-
     // Reconnecting detection cycle: 3 seconds (unit:millisecond)
     private static final int RECONNECT_PERIOD_DEFAULT = 3 * 1000;
 
diff --git a/dubbo-registry/dubbo-registry-default/src/test/java/org/apache/dubbo/registry/dubbo/SimpleRegistryService.java b/dubbo-registry/dubbo-registry-default/src/test/java/org/apache/dubbo/registry/dubbo/SimpleRegistryService.java
index 40c37b074d..b392806658 100644
--- a/dubbo-registry/dubbo-registry-default/src/test/java/org/apache/dubbo/registry/dubbo/SimpleRegistryService.java
+++ b/dubbo-registry/dubbo-registry-default/src/test/java/org/apache/dubbo/registry/dubbo/SimpleRegistryService.java
@@ -17,8 +17,6 @@
 package org.apache.dubbo.registry.dubbo;
 
 import org.apache.dubbo.common.URL;
-import org.apache.dubbo.common.logger.Logger;
-import org.apache.dubbo.common.logger.LoggerFactory;
 import org.apache.dubbo.common.utils.NetUtils;
 import org.apache.dubbo.common.utils.UrlUtils;
 import org.apache.dubbo.registry.NotifyListener;
@@ -36,7 +34,6 @@ import java.util.concurrent.ConcurrentMap;
  */
 public class SimpleRegistryService extends AbstractRegistryService {
 
-    private final static Logger logger = LoggerFactory.getLogger(SimpleRegistryService.class);
     private final ConcurrentMap<String, ConcurrentMap<String, URL>> remoteRegistered = new ConcurrentHashMap<String, ConcurrentMap<String, URL>>();
     private final ConcurrentMap<String, ConcurrentMap<String, NotifyListener>> remoteListeners = new ConcurrentHashMap<String, ConcurrentMap<String, NotifyListener>>();
     private List<String> registries;
@@ -143,4 +140,4 @@ public class SimpleRegistryService extends AbstractRegistryService {
         this.registries = registries;
     }
 
-}
\ No newline at end of file
+}
diff --git a/dubbo-registry/dubbo-registry-etcd3/src/main/java/org/apache/dubbo/registry/etcd/EtcdRegistry.java b/dubbo-registry/dubbo-registry-etcd3/src/main/java/org/apache/dubbo/registry/etcd/EtcdRegistry.java
index a15d7d561d..8d054b6bfe 100644
--- a/dubbo-registry/dubbo-registry-etcd3/src/main/java/org/apache/dubbo/registry/etcd/EtcdRegistry.java
+++ b/dubbo-registry/dubbo-registry-etcd3/src/main/java/org/apache/dubbo/registry/etcd/EtcdRegistry.java
@@ -17,8 +17,6 @@
 package org.apache.dubbo.registry.etcd;
 
 import org.apache.dubbo.common.URL;
-import org.apache.dubbo.common.logger.Logger;
-import org.apache.dubbo.common.logger.LoggerFactory;
 import org.apache.dubbo.common.utils.ConcurrentHashSet;
 import org.apache.dubbo.common.utils.UrlUtils;
 import org.apache.dubbo.registry.NotifyListener;
@@ -59,8 +57,6 @@ import static org.apache.dubbo.remoting.Constants.CHECK_KEY;
  */
 public class EtcdRegistry extends FailbackRegistry {
 
-    private final static Logger logger = LoggerFactory.getLogger(EtcdRegistry.class);
-
     private final static int DEFAULT_ETCD_PORT = 2379;
 
     private final static String DEFAULT_ROOT = "dubbo";
diff --git a/dubbo-registry/dubbo-registry-multicast/src/main/java/org/apache/dubbo/registry/multicast/MulticastRegistry.java b/dubbo-registry/dubbo-registry-multicast/src/main/java/org/apache/dubbo/registry/multicast/MulticastRegistry.java
index 7807fecaf8..8a9ad928ee 100644
--- a/dubbo-registry/dubbo-registry-multicast/src/main/java/org/apache/dubbo/registry/multicast/MulticastRegistry.java
+++ b/dubbo-registry/dubbo-registry-multicast/src/main/java/org/apache/dubbo/registry/multicast/MulticastRegistry.java
@@ -17,8 +17,6 @@
 package org.apache.dubbo.registry.multicast;
 
 import org.apache.dubbo.common.URL;
-import org.apache.dubbo.common.logger.Logger;
-import org.apache.dubbo.common.logger.LoggerFactory;
 import org.apache.dubbo.common.utils.CollectionUtils;
 import org.apache.dubbo.common.utils.ConcurrentHashSet;
 import org.apache.dubbo.common.utils.ExecutorUtil;
@@ -69,9 +67,6 @@ import static org.apache.dubbo.registry.Constants.UNSUBSCRIBE;
  */
 public class MulticastRegistry extends FailbackRegistry {
 
-    // logging output
-    private static final Logger logger = LoggerFactory.getLogger(MulticastRegistry.class);
-
     private static final int DEFAULT_MULTICAST_PORT = 1234;
 
     private final InetAddress multicastAddress;
diff --git a/dubbo-registry/dubbo-registry-nacos/src/main/java/org/apache/dubbo/registry/nacos/NacosRegistry.java b/dubbo-registry/dubbo-registry-nacos/src/main/java/org/apache/dubbo/registry/nacos/NacosRegistry.java
index 185c3de2ab..b3970770ce 100644
--- a/dubbo-registry/dubbo-registry-nacos/src/main/java/org/apache/dubbo/registry/nacos/NacosRegistry.java
+++ b/dubbo-registry/dubbo-registry-nacos/src/main/java/org/apache/dubbo/registry/nacos/NacosRegistry.java
@@ -19,8 +19,6 @@ package org.apache.dubbo.registry.nacos;
 
 import org.apache.dubbo.common.URL;
 import org.apache.dubbo.common.URLBuilder;
-import org.apache.dubbo.common.logger.Logger;
-import org.apache.dubbo.common.logger.LoggerFactory;
 import org.apache.dubbo.common.utils.StringUtils;
 import org.apache.dubbo.common.utils.UrlUtils;
 import org.apache.dubbo.registry.NotifyListener;
@@ -120,8 +118,6 @@ public class NacosRegistry extends FailbackRegistry {
      */
     private volatile ScheduledExecutorService scheduledExecutorService;
 
-    private final Logger logger = LoggerFactory.getLogger(getClass());
-
     private final NamingService namingService;
 
     public NacosRegistry(URL url, NamingService namingService) {
diff --git a/dubbo-registry/dubbo-registry-redis/src/main/java/org/apache/dubbo/registry/redis/RedisRegistry.java b/dubbo-registry/dubbo-registry-redis/src/main/java/org/apache/dubbo/registry/redis/RedisRegistry.java
index 8936e79624..c569ed487b 100644
--- a/dubbo-registry/dubbo-registry-redis/src/main/java/org/apache/dubbo/registry/redis/RedisRegistry.java
+++ b/dubbo-registry/dubbo-registry-redis/src/main/java/org/apache/dubbo/registry/redis/RedisRegistry.java
@@ -18,8 +18,6 @@ package org.apache.dubbo.registry.redis;
 
 import org.apache.dubbo.common.URL;
 import org.apache.dubbo.common.URLBuilder;
-import org.apache.dubbo.common.logger.Logger;
-import org.apache.dubbo.common.logger.LoggerFactory;
 import org.apache.dubbo.common.utils.CollectionUtils;
 import org.apache.dubbo.common.utils.ExecutorUtil;
 import org.apache.dubbo.common.utils.NamedThreadFactory;
@@ -77,8 +75,6 @@ import static org.apache.dubbo.registry.Constants.UNREGISTER;
  */
 public class RedisRegistry extends FailbackRegistry {
 
-    private static final Logger logger = LoggerFactory.getLogger(RedisRegistry.class);
-
     private final static String DEFAULT_ROOT = "dubbo";
 
     private final ScheduledExecutorService expireExecutor = Executors.newScheduledThreadPool(1, new NamedThreadFactory("DubboRegistryExpireTimer", true));
diff --git a/dubbo-registry/dubbo-registry-sofa/src/main/java/org/apache/dubbo/registry/sofa/SofaRegistry.java b/dubbo-registry/dubbo-registry-sofa/src/main/java/org/apache/dubbo/registry/sofa/SofaRegistry.java
index 4c784b34b2..536a84a1bb 100644
--- a/dubbo-registry/dubbo-registry-sofa/src/main/java/org/apache/dubbo/registry/sofa/SofaRegistry.java
+++ b/dubbo-registry/dubbo-registry-sofa/src/main/java/org/apache/dubbo/registry/sofa/SofaRegistry.java
@@ -17,8 +17,6 @@
 package org.apache.dubbo.registry.sofa;
 
 import org.apache.dubbo.common.URL;
-import org.apache.dubbo.common.logger.Logger;
-import org.apache.dubbo.common.logger.LoggerFactory;
 import org.apache.dubbo.common.utils.ConfigUtils;
 import org.apache.dubbo.common.utils.StringUtils;
 import org.apache.dubbo.registry.NotifyListener;
@@ -62,8 +60,6 @@ import static org.apache.dubbo.registry.sofa.SofaRegistryConstants.LOCAL_REGION;
  */
 public class SofaRegistry extends FailbackRegistry {
 
-    private static final Logger LOGGER = LoggerFactory.getLogger(SofaRegistry.class);
-
     /**
      * Cache subscriber by dataId
      */
@@ -85,8 +81,8 @@ public class SofaRegistry extends FailbackRegistry {
      */
     public SofaRegistry(URL url) {
         super(url);
-        if (LOGGER.isInfoEnabled()) {
-            LOGGER.info("Build sofa registry by url:" + url);
+        if (logger.isInfoEnabled()) {
+            logger.info("Build sofa registry by url:" + url);
         }
         this.registryClient = buildClient(url);
         this.waitAddressTimeout = Integer.parseInt(ConfigUtils.getProperty(ADDRESS_WAIT_TIME_KEY, "5000"));
@@ -162,7 +158,7 @@ public class SofaRegistry extends FailbackRegistry {
         Subscriber listSubscriber = subscribers.get(serviceName);
 
         if (listSubscriber != null) {
-            LOGGER.warn("Service name [" + serviceName + "] have bean registered in SOFARegistry.");
+            logger.warn("Service name [" + serviceName + "] have bean registered in SOFARegistry.");
 
             CountDownLatch countDownLatch = new CountDownLatch(1);
             handleRegistryData(listSubscriber.peekData(), listener, countDownLatch);
@@ -189,10 +185,10 @@ public class SofaRegistry extends FailbackRegistry {
     private void waitAddress(String serviceName, CountDownLatch countDownLatch) {
         try {
             if (!countDownLatch.await(waitAddressTimeout, TimeUnit.MILLISECONDS)) {
-                LOGGER.warn("Subscribe data failed by dataId " + serviceName);
+                logger.warn("Subscribe data failed by dataId " + serviceName);
             }
         } catch (Exception e) {
-            LOGGER.error("Error when wait Address!", e);
+            logger.error("Error when wait Address!", e);
         }
     }
 
@@ -264,8 +260,8 @@ public class SofaRegistry extends FailbackRegistry {
         for (String provider : datas) {
             sb.append("  >>> ").append(provider).append("\n");
         }
-        if (LOGGER.isInfoEnabled()) {
-            LOGGER.info("Receive updated RPC service addresses: service[" + dataId
+        if (logger.isInfoEnabled()) {
+            logger.info("Receive updated RPC service addresses: service[" + dataId
                     + "]\n  .Available target addresses size [" + datas.size() + "]\n"
                     + sb.toString());
         }
diff --git a/dubbo-registry/dubbo-registry-zookeeper/src/main/java/org/apache/dubbo/registry/zookeeper/ZookeeperRegistry.java b/dubbo-registry/dubbo-registry-zookeeper/src/main/java/org/apache/dubbo/registry/zookeeper/ZookeeperRegistry.java
index 51fa4aa8a6..7bd2eaa4a0 100644
--- a/dubbo-registry/dubbo-registry-zookeeper/src/main/java/org/apache/dubbo/registry/zookeeper/ZookeeperRegistry.java
+++ b/dubbo-registry/dubbo-registry-zookeeper/src/main/java/org/apache/dubbo/registry/zookeeper/ZookeeperRegistry.java
@@ -19,8 +19,6 @@ package org.apache.dubbo.registry.zookeeper;
 import org.apache.dubbo.common.URL;
 import org.apache.dubbo.common.URLBuilder;
 import org.apache.dubbo.common.URLStrParser;
-import org.apache.dubbo.common.logger.Logger;
-import org.apache.dubbo.common.logger.LoggerFactory;
 import org.apache.dubbo.common.utils.CollectionUtils;
 import org.apache.dubbo.common.utils.ConcurrentHashSet;
 import org.apache.dubbo.common.utils.UrlUtils;
@@ -61,8 +59,6 @@ import static org.apache.dubbo.common.constants.RegistryConstants.ROUTERS_CATEGO
  */
 public class ZookeeperRegistry extends FailbackRegistry {
 
-    private final static Logger logger = LoggerFactory.getLogger(ZookeeperRegistry.class);
-
     private final static String DEFAULT_ROOT = "dubbo";
 
     private final String root;
diff --git a/dubbo-rpc/dubbo-rpc-grpc/src/main/java/org/apache/dubbo/rpc/protocol/grpc/GrpcProtocol.java b/dubbo-rpc/dubbo-rpc-grpc/src/main/java/org/apache/dubbo/rpc/protocol/grpc/GrpcProtocol.java
index 1342a17e6c..42c311505c 100644
--- a/dubbo-rpc/dubbo-rpc-grpc/src/main/java/org/apache/dubbo/rpc/protocol/grpc/GrpcProtocol.java
+++ b/dubbo-rpc/dubbo-rpc-grpc/src/main/java/org/apache/dubbo/rpc/protocol/grpc/GrpcProtocol.java
@@ -17,8 +17,6 @@
 package org.apache.dubbo.rpc.protocol.grpc;
 
 import org.apache.dubbo.common.URL;
-import org.apache.dubbo.common.logger.Logger;
-import org.apache.dubbo.common.logger.LoggerFactory;
 import org.apache.dubbo.config.ReferenceConfigBase;
 import org.apache.dubbo.rpc.Invoker;
 import org.apache.dubbo.rpc.ProtocolServer;
@@ -46,8 +44,6 @@ import java.util.concurrent.ConcurrentMap;
  */
 public class GrpcProtocol extends AbstractProxyProtocol {
 
-    private static final Logger logger = LoggerFactory.getLogger(GrpcProtocol.class);
-
     public final static int DEFAULT_PORT = 50051;
 
     /* <address, gRPC channels> */