diff --git a/charts/templates/kube-ovn-crd.yaml b/charts/templates/kube-ovn-crd.yaml
index 4232b855590..95bedb58e9f 100644
--- a/charts/templates/kube-ovn-crd.yaml
+++ b/charts/templates/kube-ovn-crd.yaml
@@ -39,6 +39,10 @@ spec:
                   type: string
                 subnet:
                   type: string
+                replicas:
+                  type: integer
+                  minimum: 1
+                  maximum: 3
             status:
               type: object
               properties:
diff --git a/dist/images/install.sh b/dist/images/install.sh
index b614cefe9c2..d3e61a9915e 100755
--- a/dist/images/install.sh
+++ b/dist/images/install.sh
@@ -264,6 +264,10 @@ spec:
                   type: string
                 subnet:
                   type: string
+                replicas:
+                  type: integer
+                  minimum: 1
+                  maximum: 3
             status:
               type: object
               properties:
diff --git a/pkg/apis/kubeovn/v1/types.go b/pkg/apis/kubeovn/v1/types.go
index d98f75344b6..456fe311d71 100644
--- a/pkg/apis/kubeovn/v1/types.go
+++ b/pkg/apis/kubeovn/v1/types.go
@@ -852,8 +852,9 @@ type VpcDns struct {
 }
 
 type VpcDNSSpec struct {
-	Vpc    string `json:"vpc"`
-	Subnet string `json:"subnet"`
+	Replicas int32  `json:"replicas"`
+	Vpc      string `json:"vpc"`
+	Subnet   string `json:"subnet"`
 }
 
 // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
diff --git a/pkg/controller/vpc_dns.go b/pkg/controller/vpc_dns.go
index cee1dd15760..38071d4c556 100644
--- a/pkg/controller/vpc_dns.go
+++ b/pkg/controller/vpc_dns.go
@@ -193,12 +193,6 @@ func (c *Controller) handleAddOrUpdateVPCDNS(key string) error {
 		return err
 	}
 
-	if err := c.checkOvnDefaultSpecProvider(); err != nil {
-		err := fmt.Errorf("failed to check %s spec provider, %v", util.DefaultSubnet, err)
-		klog.Error(err)
-		return err
-	}
-
 	if err := c.checkVpcDNSDuplicated(vpcDNS); err != nil {
 		err = fmt.Errorf("failed to deploy %s, %v", vpcDNS.Name, err)
 		klog.Error(err)
@@ -277,6 +271,10 @@ func (c *Controller) createOrUpdateVpcDNSDep(vpcDNS *kubeovnv1.VpcDns) error {
 		return err
 	}
 
+	if vpcDNS.Spec.Replicas != 0 {
+		newDp.Spec.Replicas = &vpcDNS.Spec.Replicas
+	}
+
 	if needToCreateDp {
 		_, err := c.config.KubeClient.AppsV1().Deployments(c.config.PodNamespace).
 			Create(context.Background(), newDp, metav1.CreateOptions{})
@@ -491,20 +489,6 @@ func (c *Controller) checkOvnNad() error {
 	return nil
 }
 
-func (c *Controller) checkOvnDefaultSpecProvider() error {
-	cachedSubnet, err := c.subnetsLister.Get(util.DefaultSubnet)
-	if err != nil {
-		klog.Error(err)
-		return fmt.Errorf("failed to get default subnet %v", err)
-	}
-
-	if cachedSubnet.Spec.Provider != nadProvider {
-		return fmt.Errorf("the %s provider does not exist", nadProvider)
-	}
-
-	return nil
-}
-
 func (c *Controller) resyncVpcDNSConfig() {
 	cm, err := c.configMapsLister.ConfigMaps(c.config.PodNamespace).Get(util.VpcDNSConfig)
 	if err != nil && !k8serrors.IsNotFound(err) {
diff --git a/yamls/crd.yaml b/yamls/crd.yaml
index 05f0aa44163..b477c9dc4c0 100644
--- a/yamls/crd.yaml
+++ b/yamls/crd.yaml
@@ -39,6 +39,10 @@ spec:
                   type: string
                 subnet:
                   type: string
+                replicas:
+                  type: integer
+                  minimum: 1
+                  maximum: 3
             status:
               type: object
               properties: