diff --git a/pkg/apis/pingcap/v1alpha1/tidbcluster.go b/pkg/apis/pingcap/v1alpha1/tidbcluster.go
index 18fad29d9a..8f4698f002 100644
--- a/pkg/apis/pingcap/v1alpha1/tidbcluster.go
+++ b/pkg/apis/pingcap/v1alpha1/tidbcluster.go
@@ -43,6 +43,7 @@ const (
 	// defaultTiCDCGracefulShutdownTimeout is the timeout limit of graceful
 	// shutdown a TiCDC pod.
 	defaultTiCDCGracefulShutdownTimeout = 10 * time.Minute
+	defaultPDStartTimeout               = 30
 
 	// the latest version
 	versionLatest = "latest"
@@ -1250,3 +1251,10 @@ func (tc *TidbCluster) StartScriptVersion() StartScriptVersion {
 		return StartScriptV1
 	}
 }
+
+func (tc *TidbCluster) PDStartTimeout() int {
+	if tc.Spec.PD != nil && tc.Spec.PD.StartTimeout != 0 {
+		return tc.Spec.PD.StartTimeout
+	}
+	return defaultPDStartTimeout
+}
diff --git a/pkg/manager/member/startscript/v1/render_script.go b/pkg/manager/member/startscript/v1/render_script.go
index fdb2844df0..ca79d5481b 100644
--- a/pkg/manager/member/startscript/v1/render_script.go
+++ b/pkg/manager/member/startscript/v1/render_script.go
@@ -65,7 +65,7 @@ func RenderPDStartScript(tc *v1alpha1.TidbCluster) (string, error) {
 		},
 		Scheme:         tc.Scheme(),
 		DataDir:        filepath.Join(constants.PDDataVolumeMountPath, tc.Spec.PD.DataSubDir),
-		PDStartTimeout: tc.Spec.PD.StartTimeout,
+		PDStartTimeout: tc.PDStartTimeout(),
 	}
 	if tc.Spec.PD.StartUpScriptVersion == "v1" {
 		model.CheckDomainScript = checkDNSV1
diff --git a/pkg/manager/member/startscript/v1/template_test.go b/pkg/manager/member/startscript/v1/template_test.go
index 8a7281070e..6fb0edce73 100644
--- a/pkg/manager/member/startscript/v1/template_test.go
+++ b/pkg/manager/member/startscript/v1/template_test.go
@@ -1227,9 +1227,7 @@ exec /pd-server ${ARGS}
 
 			tc := &v1alpha1.TidbCluster{
 				Spec: v1alpha1.TidbClusterSpec{
-					PD: &v1alpha1.PDSpec{
-						StartTimeout: 30,
-					},
+					PD: &v1alpha1.PDSpec{},
 				},
 			}
 			tc.Name = "test-pd"
diff --git a/pkg/manager/member/startscript/v2/pd_start_script.go b/pkg/manager/member/startscript/v2/pd_start_script.go
index 7fdbb9c865..d5398c5d22 100644
--- a/pkg/manager/member/startscript/v2/pd_start_script.go
+++ b/pkg/manager/member/startscript/v2/pd_start_script.go
@@ -67,7 +67,7 @@ func RenderPDStartScript(tc *v1alpha1.TidbCluster) (string, error) {
 
 	m.DiscoveryAddr = fmt.Sprintf("%s-discovery.%s:10261", tcName, tcNS)
 
-	m.PDStartTimeout = tc.Spec.PD.StartTimeout
+	m.PDStartTimeout = tc.PDStartTimeout()
 
 	return renderTemplateFunc(pdStartScriptTpl, m)
 }
diff --git a/pkg/manager/member/startscript/v2/pd_start_script_test.go b/pkg/manager/member/startscript/v2/pd_start_script_test.go
index f9666b47de..fc0b838348 100644
--- a/pkg/manager/member/startscript/v2/pd_start_script_test.go
+++ b/pkg/manager/member/startscript/v2/pd_start_script_test.go
@@ -543,9 +543,7 @@ exec /pd-server ${ARGS}
 
 		tc := &v1alpha1.TidbCluster{
 			Spec: v1alpha1.TidbClusterSpec{
-				PD: &v1alpha1.PDSpec{
-					StartTimeout: 30,
-				},
+				PD: &v1alpha1.PDSpec{},
 			},
 		}
 		tc.Name = "start-script-test"