diff --git a/cmd/webhook-manager/app/options/options.go b/cmd/webhook-manager/app/options/options.go
index 2bc9b2fe9d..78eb3ee41f 100644
--- a/cmd/webhook-manager/app/options/options.go
+++ b/cmd/webhook-manager/app/options/options.go
@@ -58,7 +58,7 @@ func (c *Config) AddFlags(fs *pflag.FlagSet) {
 		"File containing the default x509 Certificate for HTTPS. (CA cert, if any, concatenated "+
 		"after server cert).")
 	fs.StringVar(&c.KeyFile, "tls-private-key-file", c.KeyFile, "File containing the default x509 private key matching --tls-cert-file.")
-	fs.IntVar(&c.Port, "port", 443, "the port used by admission-controller-server.")
+	fs.IntVar(&c.Port, "port", 8443, "the port used by admission-controller-server.")
 	fs.BoolVar(&c.PrintVersion, "version", false, "Show version and quit")
 	fs.Float32Var(&c.KubeClientOptions.QPS, "kube-api-qps", defaultQPS, "QPS to use while talking with kubernetes apiserver")
 	fs.IntVar(&c.KubeClientOptions.Burst, "kube-api-burst", defaultBurst, "Burst to use while talking with kubernetes apiserver")
diff --git a/installer/helm/chart/volcano/templates/admission.yaml b/installer/helm/chart/volcano/templates/admission.yaml
index 90a359b341..58141764ba 100644
--- a/installer/helm/chart/volcano/templates/admission.yaml
+++ b/installer/helm/chart/volcano/templates/admission.yaml
@@ -80,7 +80,7 @@ spec:
             - --webhook-namespace={{ .Release.Namespace }}
             - --webhook-service-name={{ .Release.Name }}-admission-service
             - --logtostderr
-            - --port=443
+            - --port={{.Values.basic.admission_port}}
             - -v=4
             - 2>&1
           image: {{.Values.basic.admission_image_name}}:{{.Values.basic.image_tag_version}}
@@ -108,7 +108,7 @@ spec:
   ports:
     - port: 443
       protocol: TCP
-      targetPort: 443
+      targetPort: {{.Values.basic.admission_port}}
   selector:
     app: volcano-admission
   sessionAffinity: None
diff --git a/installer/helm/chart/volcano/values.yaml b/installer/helm/chart/volcano/values.yaml
index c9784e5996..fdeff9174c 100644
--- a/installer/helm/chart/volcano/values.yaml
+++ b/installer/helm/chart/volcano/values.yaml
@@ -6,3 +6,4 @@ basic:
   admission_secret_name: "volcano-admission-secret"
   scheduler_config_file: "config/volcano-scheduler.conf"
   image_pull_secret: ""
+  admission_port: 8443
diff --git a/installer/volcano-development.yaml b/installer/volcano-development.yaml
index 4f1d433372..a030715211 100644
--- a/installer/volcano-development.yaml
+++ b/installer/volcano-development.yaml
@@ -217,7 +217,7 @@ spec:
             - --webhook-namespace=volcano-system
             - --webhook-service-name=volcano-admission-service
             - --logtostderr
-            - --port=443
+            - --port=8443
             - -v=4
             - 2>&1
           image: volcanosh/vc-webhook-manager:latest
@@ -245,7 +245,7 @@ spec:
   ports:
     - port: 443
       protocol: TCP
-      targetPort: 443
+      targetPort: 8443
   selector:
     app: volcano-admission
   sessionAffinity: None