diff --git a/namesrv/src/main/java/org/apache/rocketmq/namesrv/NamesrvStartup.java b/namesrv/src/main/java/org/apache/rocketmq/namesrv/NamesrvStartup.java
index 760a61be02f1067c6e73ff072502eebdb3f1dbf3..0a0c6562d6f70226d643ba24174536ec2b9765b5 100644
--- a/namesrv/src/main/java/org/apache/rocketmq/namesrv/NamesrvStartup.java
+++ b/namesrv/src/main/java/org/apache/rocketmq/namesrv/NamesrvStartup.java
@@ -32,7 +32,6 @@ import org.apache.rocketmq.common.MixAll;
 import org.apache.rocketmq.common.constant.LoggerName;
 import org.apache.rocketmq.common.namesrv.NamesrvConfig;
 import org.apache.rocketmq.remoting.netty.NettyServerConfig;
-import org.apache.rocketmq.remoting.netty.NettySystemConfig;
 import org.apache.rocketmq.remoting.protocol.RemotingCommand;
 import org.apache.rocketmq.srvutil.ServerUtil;
 import org.apache.rocketmq.srvutil.ShutdownHookThread;
@@ -49,15 +48,6 @@ public class NamesrvStartup {
 
     public static NamesrvController main0(String[] args) {
         System.setProperty(RemotingCommand.REMOTING_VERSION_KEY, Integer.toString(MQVersion.CURRENT_VERSION));
-
-        if (null == System.getProperty(NettySystemConfig.COM_ROCKETMQ_REMOTING_SOCKET_SNDBUF_SIZE)) {
-            NettySystemConfig.socketSndbufSize = 4096;
-        }
-
-        if (null == System.getProperty(NettySystemConfig.COM_ROCKETMQ_REMOTING_SOCKET_RCVBUF_SIZE)) {
-            NettySystemConfig.socketRcvbufSize = 4096;
-        }
-
         try {
             //PackageConflictDetect.detectFastjson();