diff --git a/ddl/ddl.go b/ddl/ddl.go
index a7412cb047412..a0c982a5e1f9c 100644
--- a/ddl/ddl.go
+++ b/ddl/ddl.go
@@ -1229,7 +1229,6 @@ func (d *ddl) SwitchMDL(enable bool) error {
 	ctx, cancel := context.WithTimeout(context.Background(), time.Second*30)
 	defer cancel()
 
-	logutil.BgLogger().Info("Switch EnableMDL 1", zap.Bool("arg", enable), zap.Bool("value", variable.EnableMDL.Load()))
 	// Disable MDL for test.
 	if enable && !variable.DefTiDBEnableConcurrentDDL {
 		sql := fmt.Sprintf("UPDATE HIGH_PRIORITY %[1]s.%[2]s SET VARIABLE_VALUE = %[4]d WHERE VARIABLE_NAME = '%[3]s'",
@@ -1248,7 +1247,6 @@ func (d *ddl) SwitchMDL(enable bool) error {
 		return nil
 	}
 
-	logutil.BgLogger().Info("Switch EnableMDL 2", zap.Bool("arg", enable), zap.Bool("value", variable.EnableMDL.Load()))
 	isEnableBefore := variable.EnableMDL.Load()
 	if isEnableBefore == enable {
 		return nil
@@ -1270,9 +1268,7 @@ func (d *ddl) SwitchMDL(enable bool) error {
 		return errors.New("please wait for all jobs done")
 	}
 
-	logutil.BgLogger().Info("Switch EnableMDL 3", zap.Bool("arg", enable), zap.Bool("value", variable.EnableMDL.Load()))
 	variable.EnableMDL.Store(enable)
-	logutil.BgLogger().Info("Switch EnableMDL 4", zap.Bool("arg", enable), zap.Bool("value", variable.EnableMDL.Load()))
 
 	err = kv.RunInNewTxn(kv.WithInternalSourceType(context.Background(), kv.InternalTxnDDL), d.store, true, func(ctx context.Context, txn kv.Transaction) error {
 		m := meta.NewMeta(txn)
diff --git a/sessionctx/variable/BUILD.bazel b/sessionctx/variable/BUILD.bazel
index 5bc93b06a1e4f..f69d4b04ffec5 100644
--- a/sessionctx/variable/BUILD.bazel
+++ b/sessionctx/variable/BUILD.bazel
@@ -67,7 +67,6 @@ go_library(
         "@org_golang_x_exp//maps",
         "@org_golang_x_exp//slices",
         "@org_uber_go_atomic//:atomic",
-        "@org_uber_go_zap//:zap",
     ],
 )
 
diff --git a/sessionctx/variable/sysvar.go b/sessionctx/variable/sysvar.go
index 53d118e242cda..c095d7e8a3d1c 100644
--- a/sessionctx/variable/sysvar.go
+++ b/sessionctx/variable/sysvar.go
@@ -48,7 +48,6 @@ import (
 	tikvcfg "github.com/tikv/client-go/v2/config"
 	tikvstore "github.com/tikv/client-go/v2/kv"
 	atomic2 "go.uber.org/atomic"
-	"go.uber.org/zap"
 )
 
 // All system variables declared here are ordered by their scopes, which follow the order of scopes below:
@@ -1115,9 +1114,7 @@ var defaultSysVars = []*SysVar{
 		return BoolToOnOff(EnableConcurrentDDL.Load()), nil
 	}},
 	{Scope: ScopeGlobal, Name: TiDBEnableMDL, Value: BoolToOnOff(DefTiDBEnableMDL), Type: TypeBool, SetGlobal: func(_ context.Context, vars *SessionVars, val string) error {
-		logutil.BgLogger().Info("mdl related variable status in setting status", zap.Bool("EnableMDL", EnableMDL.Load()), zap.Bool("EnableConcurrentDDL", EnableConcurrentDDL.Load()))
 		if EnableMDL.Load() != TiDBOptOn(val) {
-			logutil.BgLogger().Info("Switch EnableMDL", zap.Bool("val", TiDBOptOn(val)))
 			err := SwitchMDL(TiDBOptOn(val))
 			if err != nil {
 				return err