diff --git a/cdc/sink/dmlsink/mq/pulsar_dml_sink.go b/cdc/sink/dmlsink/mq/pulsar_dml_sink.go
index 93b40f9ac8b..16c0f30c9cd 100644
--- a/cdc/sink/dmlsink/mq/pulsar_dml_sink.go
+++ b/cdc/sink/dmlsink/mq/pulsar_dml_sink.go
@@ -24,6 +24,7 @@ import (
 	"github.com/pingcap/tiflow/cdc/sink/dmlsink/mq/dispatcher"
 	"github.com/pingcap/tiflow/cdc/sink/dmlsink/mq/dmlproducer"
 	"github.com/pingcap/tiflow/cdc/sink/dmlsink/mq/manager"
+	"github.com/pingcap/tiflow/cdc/sink/dmlsink/mq/transformer/column_selector"
 	"github.com/pingcap/tiflow/cdc/sink/util"
 	"github.com/pingcap/tiflow/pkg/config"
 	cerror "github.com/pingcap/tiflow/pkg/errors"
@@ -104,6 +105,11 @@ func NewPulsarDMLSink(
 		return nil, errors.Trace(err)
 	}
 
+	trans, err := column_selector.New(replicaConfig)
+	if err != nil {
+		return nil, errors.Trace(err)
+	}
+
 	encoderConfig, err := util.GetEncoderConfig(changefeedID, sinkURI, protocol, replicaConfig,
 		config.DefaultMaxMessageBytes)
 	if err != nil {
@@ -119,7 +125,7 @@ func NewPulsarDMLSink(
 	encoderGroup := codec.NewEncoderGroup(encoderBuilder, concurrency, changefeedID)
 
 	s := newDMLSink(ctx, changefeedID, p, nil, topicManager,
-		eventRouter, encoderGroup, protocol, scheme, errCh)
+		eventRouter, trans, encoderGroup, protocol, scheme, errCh)
 
 	return s, nil
 }
diff --git a/cdc/sink/dmlsink/mq/transformer/column_selector/column_selector.go b/cdc/sink/dmlsink/mq/transformer/column_selector/column_selector.go
index 68b2594c380..cdf51b81b5f 100644
--- a/cdc/sink/dmlsink/mq/transformer/column_selector/column_selector.go
+++ b/cdc/sink/dmlsink/mq/transformer/column_selector/column_selector.go
@@ -58,17 +58,18 @@ func (s *selector) Apply(event *model.RowChangedEvent) error {
 		return nil
 	}
 
-	for _, column := range event.Columns {
-		if !s.columnM.MatchColumn(column.Name) {
-			column.Value = nil
+	for i := 0; i < len(event.Columns); i++ {
+		if !s.columnM.MatchColumn(event.Columns[i].Name) {
+			event.Columns[i] = nil
 		}
 	}
 
-	for _, column := range event.PreColumns {
-		if !s.columnM.MatchColumn(column.Name) {
-			column.Value = nil
+	for i := 0; i < len(event.PreColumns); i++ {
+		if !s.columnM.MatchColumn(event.PreColumns[i].Name) {
+			event.PreColumns[i] = nil
 		}
 	}
+
 	return nil
 }
 
diff --git a/cdc/sink/dmlsink/mq/transformer/column_selector/column_selector_test.go b/cdc/sink/dmlsink/mq/transformer/column_selector/column_selector_test.go
index 19d6e6fcda5..f8be4060846 100644
--- a/cdc/sink/dmlsink/mq/transformer/column_selector/column_selector_test.go
+++ b/cdc/sink/dmlsink/mq/transformer/column_selector/column_selector_test.go
@@ -21,42 +21,40 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
-var (
-	event = &model.RowChangedEvent{
-		Table: &model.TableName{
-			Schema: "test",
-			Table:  "table1",
+var event = &model.RowChangedEvent{
+	Table: &model.TableName{
+		Schema: "test",
+		Table:  "table1",
+	},
+	Columns: []*model.Column{
+		{
+			Name:  "col1",
+			Value: []byte("val1"),
 		},
-		Columns: []*model.Column{
-			{
-				Name:  "col1",
-				Value: []byte("val1"),
-			},
-			{
-				Name:  "col2",
-				Value: []byte("val2"),
-			},
-			{
-				Name:  "col3",
-				Value: []byte("val3"),
-			},
+		{
+			Name:  "col2",
+			Value: []byte("val2"),
 		},
-		PreColumns: []*model.Column{
-			{
-				Name:  "col1",
-				Value: []byte("val1"),
-			},
-			{
-				Name:  "col2",
-				Value: []byte("val2"),
-			},
-			{
-				Name:  "col3",
-				Value: []byte("val3"),
-			},
+		{
+			Name:  "col3",
+			Value: []byte("val3"),
 		},
-	}
-)
+	},
+	PreColumns: []*model.Column{
+		{
+			Name:  "col1",
+			Value: []byte("val1"),
+		},
+		{
+			Name:  "col2",
+			Value: []byte("val2"),
+		},
+		{
+			Name:  "col3",
+			Value: []byte("val3"),
+		},
+	},
+}
 
 func TestNewColumnSelectorNoRules(t *testing.T) {
 	// the column selector is not set
@@ -105,11 +103,11 @@ func TestNewColumnSelector(t *testing.T) {
 	require.NoError(t, err)
 	require.Equal(t, []byte("val1"), event.Columns[0].Value)
 	require.Equal(t, []byte("val2"), event.Columns[1].Value)
-	require.Nil(t, event.Columns[2].Value)
+	require.Nil(t, event.Columns[2])
 
 	require.Equal(t, []byte("val1"), event.PreColumns[0].Value)
 	require.Equal(t, []byte("val2"), event.PreColumns[1].Value)
-	require.Nil(t, event.PreColumns[2].Value)
+	require.Nil(t, event.PreColumns[2])
 
 	event = &model.RowChangedEvent{
 		Table: &model.TableName{
@@ -134,7 +132,7 @@ func TestNewColumnSelector(t *testing.T) {
 	// the first column `a` is filter out, set to nil.
 	err = selectors.Apply(event)
 	require.NoError(t, err)
-	require.Nil(t, event.Columns[0].Value)
+	require.Nil(t, event.Columns[0])
 	require.Equal(t, []byte("b"), event.Columns[1].Value)
 	require.Equal(t, []byte("c"), event.Columns[2].Value)
 
@@ -166,7 +164,7 @@ func TestNewColumnSelector(t *testing.T) {
 	require.NoError(t, err)
 	require.Equal(t, []byte("col"), event.Columns[0].Value)
 	require.Equal(t, []byte("col1"), event.Columns[1].Value)
-	require.Nil(t, event.Columns[2].Value)
+	require.Nil(t, event.Columns[2])
 	require.Equal(t, []byte("col3"), event.Columns[3].Value)
 
 	event = &model.RowChangedEvent{
@@ -195,8 +193,8 @@ func TestNewColumnSelector(t *testing.T) {
 	}
 	err = selectors.Apply(event)
 	require.NoError(t, err)
-	require.Nil(t, event.Columns[0].Value)
+	require.Nil(t, event.Columns[0])
 	require.Equal(t, []byte("col1"), event.Columns[1].Value)
-	require.Nil(t, event.Columns[2].Value)
+	require.Nil(t, event.Columns[2])
 	require.Equal(t, []byte("coA1"), event.Columns[3].Value)
 }