diff --git a/dm/master/config.go b/dm/master/config.go
index a771658ff2..a444b0291e 100644
--- a/dm/master/config.go
+++ b/dm/master/config.go
@@ -439,7 +439,7 @@ func parseURLs(s string) ([]url.URL, error) {
 	return urls, nil
 }
 
-func genEmbedEtcdConfigWithLogger() *embed.Config {
+func genEmbedEtcdConfigWithLogger(logLevel string) *embed.Config {
 	cfg := embed.NewConfig()
 	cfg.EnableGRPCGateway = true // enable gRPC gateway for the internal etcd.
 
@@ -447,9 +447,13 @@ func genEmbedEtcdConfigWithLogger() *embed.Config {
 	// NOTE: `genEmbedEtcdConfig` can only be called after logger initialized.
 	// NOTE: if using zap logger for etcd, must build it before any concurrent gRPC calls,
 	// otherwise, DATA RACE occur in NewZapCoreLoggerBuilder and gRPC.
-	// NOTE: we can only increase the log level for the clone logger but not decrease.
-	logger := log.L().WithFields(zap.String("component", "embed etcd")).WithOptions(zap.IncreaseLevel(zap.ErrorLevel))
-	cfg.ZapLoggerBuilder = embed.NewZapCoreLoggerBuilder(logger, logger.Core(), log.Props().Syncer) // use global app props.
+	logger := log.L().WithFields(zap.String("component", "embed etcd"))
+	// if logLevel is info, set etcd log level to WARN to reduce log
+	if strings.ToLower(logLevel) == "info" {
+		logger.Logger = logger.WithOptions(zap.IncreaseLevel(zap.WarnLevel))
+	}
+
+	cfg.ZapLoggerBuilder = embed.NewZapCoreLoggerBuilder(logger.Logger, logger.Core(), log.Props().Syncer) // use global app props.
 	cfg.Logger = "zap"
 
 	// TODO: we run ZapLoggerBuilder to set SetLoggerV2 before we do some etcd operations
diff --git a/dm/master/etcd_test.go b/dm/master/etcd_test.go
index 39e7261c6b..b95368f3d6 100644
--- a/dm/master/etcd_test.go
+++ b/dm/master/etcd_test.go
@@ -55,7 +55,7 @@ func (t *testEtcdSuite) TestStartEtcdFail(c *check.C) {
 	c.Assert(cfgCluster.adjust(), check.IsNil)
 
 	// start an etcd cluster
-	cfgClusterEtcd := genEmbedEtcdConfigWithLogger()
+	cfgClusterEtcd := genEmbedEtcdConfigWithLogger("info")
 	cfgClusterEtcd, err := cfgCluster.genEmbedEtcdConfig(cfgClusterEtcd)
 	c.Assert(err, check.IsNil)
 	e, err := startEtcd(cfgClusterEtcd, nil, nil, 3*time.Second)
@@ -71,7 +71,7 @@ func (t *testEtcdSuite) TestPrepareJoinEtcd(c *check.C) {
 	cfgCluster.AdvertiseAddr = tempurl.Alloc()[len("http://"):]
 	cfgCluster.PeerUrls = tempurl.Alloc()
 	c.Assert(cfgCluster.adjust(), check.IsNil)
-	cfgClusterEtcd := genEmbedEtcdConfigWithLogger()
+	cfgClusterEtcd := genEmbedEtcdConfigWithLogger("info")
 	cfgClusterEtcd, err := cfgCluster.genEmbedEtcdConfig(cfgClusterEtcd)
 	c.Assert(err, check.IsNil)
 
@@ -178,7 +178,7 @@ func (t *testEtcdSuite) TestPrepareJoinEtcd(c *check.C) {
 	c.Assert(err, check.ErrorMatches, ".*fail to join embed etcd: there is a member that has not joined successfully, continue the join or remove it.*")
 
 	// start the joining etcd
-	cfgAfterEtcd := genEmbedEtcdConfigWithLogger()
+	cfgAfterEtcd := genEmbedEtcdConfigWithLogger("info")
 	cfgAfterEtcd, err = cfgAfter.genEmbedEtcdConfig(cfgAfterEtcd)
 	c.Assert(err, check.IsNil)
 	e2, err := startEtcd(cfgAfterEtcd, nil, nil, etcdStartTimeout)
diff --git a/dm/master/server.go b/dm/master/server.go
index 6a6cf8b7c7..e4cb71d63e 100644
--- a/dm/master/server.go
+++ b/dm/master/server.go
@@ -140,7 +140,7 @@ func NewServer(cfg *Config) *Server {
 
 // Start starts to serving
 func (s *Server) Start(ctx context.Context) (err error) {
-	etcdCfg := genEmbedEtcdConfigWithLogger()
+	etcdCfg := genEmbedEtcdConfigWithLogger(s.cfg.LogLevel)
 	// prepare config to join an existing cluster
 	err = prepareJoinEtcd(s.cfg)
 	if err != nil {