diff --git a/.github/workflows/e2e-1.30.yaml b/.github/workflows/e2e-1.30.yaml
index ab31fabf67..2218eb20c9 100644
--- a/.github/workflows/e2e-1.30.yaml
+++ b/.github/workflows/e2e-1.30.yaml
@@ -171,7 +171,7 @@ jobs:
       - name: Run E2E Tests
         run: |
           export KUBECONFIG=/home/runner/.kube/config
-          tools/hack/run-kruise-e2e-test.sh --focus '\[apps\] SidecarSet' --print-info --disable-parallel
+          tools/hack/run-kruise-e2e-test.sh --focus '\[apps\] SidecarSet' --print-info
 
   ephemeraljob:
     runs-on: ubuntu-20.04
@@ -231,7 +231,7 @@ jobs:
       - name: Run E2E Tests
         run: |
           export KUBECONFIG=/home/runner/.kube/config
-          tools/hack/run-kruise-e2e-test.sh --focus '\[policy\] PodUnavailableBudget' --print-info --disable-parallel
+          tools/hack/run-kruise-e2e-test.sh --focus '\[policy\] PodUnavailableBudget' --print-info
 
   clonesetAndInplace:
     runs-on: ubuntu-20.04
diff --git a/test/e2e/apps/sidecarset.go b/test/e2e/apps/sidecarset.go
index 671d505a6e..9b2b81adc0 100644
--- a/test/e2e/apps/sidecarset.go
+++ b/test/e2e/apps/sidecarset.go
@@ -24,13 +24,14 @@ import (
 	"strconv"
 	"time"
 
+	v1core "k8s.io/client-go/kubernetes/typed/core/v1"
+
 	appsv1alpha1 "github.com/openkruise/kruise/apis/apps/v1alpha1"
 	kruiseclientset "github.com/openkruise/kruise/pkg/client/clientset/versioned"
 	"github.com/openkruise/kruise/pkg/control/sidecarcontrol"
 	"github.com/openkruise/kruise/pkg/util"
 	"github.com/openkruise/kruise/pkg/util/configuration"
 	"github.com/openkruise/kruise/test/e2e/framework"
-	v1core "k8s.io/client-go/kubernetes/typed/core/v1"
 
 	"github.com/onsi/ginkgo"
 	"github.com/onsi/gomega"
@@ -47,6 +48,7 @@ import (
 )
 
 var _ = SIGDescribe("SidecarSet", func() {
+	framework.TestContext.DeleteNamespaceOnFailure = false
 	f := framework.NewDefaultFramework("sidecarset")
 	var ns string
 	var c clientset.Interface
@@ -66,7 +68,7 @@ var _ = SIGDescribe("SidecarSet", func() {
 				framework.DumpDebugInfo(c, ns)
 			}
 			framework.Logf("Deleting all SidecarSet in cluster")
-			tester.DeleteSidecarSets()
+			tester.DeleteSidecarSets(ns)
 			tester.DeleteDeployments(ns)
 		})
 		framework.ConformanceIt("pods don't have matched sidecarSet", func() {
@@ -652,14 +654,14 @@ var _ = SIGDescribe("SidecarSet", func() {
 		})*/
 	})
 
-	framework.KruiseDescribe("SidecarSet Upgrade functionality [SidecarSeUpgrade]", func() {
+	framework.KruiseDescribe("SidecarSet Upgrade functionality [SidecarSetUpgrade]", func() {
 
 		ginkgo.AfterEach(func() {
 			if ginkgo.CurrentGinkgoTestDescription().Failed {
 				framework.DumpDebugInfo(c, ns)
 			}
 			framework.Logf("Deleting all SidecarSet in cluster")
-			tester.DeleteSidecarSets()
+			tester.DeleteSidecarSets(ns)
 			tester.DeleteDeployments(ns)
 		})
 
diff --git a/test/e2e/apps/sidecarset_hotupgrade.go b/test/e2e/apps/sidecarset_hotupgrade.go
index cb66da0670..e1a825b239 100644
--- a/test/e2e/apps/sidecarset_hotupgrade.go
+++ b/test/e2e/apps/sidecarset_hotupgrade.go
@@ -53,7 +53,7 @@ var _ = SIGDescribe("SidecarSet", func() {
 				framework.DumpDebugInfo(c, ns)
 			}
 			framework.Logf("Deleting all SidecarSet in cluster")
-			tester.DeleteSidecarSets()
+			tester.DeleteSidecarSets(ns)
 			tester.DeleteDeployments(ns)
 		})
 
diff --git a/test/e2e/framework/sidecarset_utils.go b/test/e2e/framework/sidecarset_utils.go
index bcfd468bd7..5d79a0b403 100644
--- a/test/e2e/framework/sidecarset_utils.go
+++ b/test/e2e/framework/sidecarset_utils.go
@@ -18,14 +18,16 @@ package framework
 
 import (
 	"context"
+	"fmt"
 	"time"
 
+	"k8s.io/utils/ptr"
+
 	appsv1alpha1 "github.com/openkruise/kruise/apis/apps/v1alpha1"
 	kruiseclientset "github.com/openkruise/kruise/pkg/client/clientset/versioned"
 	"github.com/openkruise/kruise/pkg/control/sidecarcontrol"
 	"github.com/openkruise/kruise/pkg/util"
 	webhookutil "github.com/openkruise/kruise/pkg/webhook/util"
-	"k8s.io/utils/ptr"
 
 	"github.com/onsi/gomega"
 	apps "k8s.io/api/apps/v1"
@@ -58,7 +60,8 @@ func (s *SidecarSetTester) NewBaseSidecarSet(ns string) *appsv1alpha1.SidecarSet
 			APIVersion: "apps.kruise.io/v1alpha1",
 		},
 		ObjectMeta: metav1.ObjectMeta{
-			Name: "test-sidecarset",
+
+			Name: fmt.Sprintf("test-sidecarset-%s", ns),
 			Labels: map[string]string{
 				"app": "sidecar",
 			},
@@ -226,7 +229,7 @@ func (s *SidecarSetTester) CreateDeployment(deployment *apps.Deployment) {
 	s.WaitForDeploymentRunning(deployment)
 }
 
-func (s *SidecarSetTester) DeleteSidecarSets() {
+func (s *SidecarSetTester) DeleteSidecarSets(ns string) {
 	sidecarSetList, err := s.kc.AppsV1alpha1().SidecarSets().List(context.TODO(), metav1.ListOptions{})
 	if err != nil {
 		Logf("List sidecarSets failed: %s", err.Error())
@@ -234,6 +237,9 @@ func (s *SidecarSetTester) DeleteSidecarSets() {
 	}
 
 	for _, sidecarSet := range sidecarSetList.Items {
+		if sidecarSet.Namespace != ns {
+			continue
+		}
 		s.DeleteSidecarSet(&sidecarSet)
 	}
 }
diff --git a/test/e2e/policy/podunavailablebudget.go b/test/e2e/policy/podunavailablebudget.go
index f683d8fc3a..615a213876 100644
--- a/test/e2e/policy/podunavailablebudget.go
+++ b/test/e2e/policy/podunavailablebudget.go
@@ -65,7 +65,7 @@ var _ = SIGDescribe("PodUnavailableBudget", func() {
 			tester.DeletePubs(ns)
 			tester.DeleteDeployments(ns)
 			tester.DeleteCloneSets(ns)
-			sidecarTester.DeleteSidecarSets()
+			sidecarTester.DeleteSidecarSets(ns)
 		})
 
 		ginkgo.It("PodUnavailableBudget selector no matched pods", func() {