diff --git a/pkg/controller/sub_controller/disaggregated_cluster/metaservice/statefulset.go b/pkg/controller/sub_controller/disaggregated_cluster/metaservice/statefulset.go
index e688daf2..3cddea23 100644
--- a/pkg/controller/sub_controller/disaggregated_cluster/metaservice/statefulset.go
+++ b/pkg/controller/sub_controller/disaggregated_cluster/metaservice/statefulset.go
@@ -73,6 +73,9 @@ func (dms *DisaggregatedMSController) newStatefulset(ddc *v1.DorisDisaggregatedC
 	}
 
 	replicas := metadata.GetInt32Pointer(v1.DefaultMetaserviceNumber)
+	if msSpec.Replicas != nil {
+		replicas = msSpec.Replicas
+	}
 
 	func() {
 		st.Spec.Replicas = replicas