diff --git a/pkg/yurtmanager/controller/hubleader/hubleader_controller.go b/pkg/yurtmanager/controller/hubleader/hubleader_controller.go
index c387937ac64..03fe8361548 100644
--- a/pkg/yurtmanager/controller/hubleader/hubleader_controller.go
+++ b/pkg/yurtmanager/controller/hubleader/hubleader_controller.go
@@ -176,8 +176,8 @@ func (r *ReconcileHubLeader) reconcileHubLeader(ctx context.Context, nodepool *a
 	// Set match labels
 	matchLabels := make(map[string]string)
 	if nodepool.Spec.LeaderElectionStrategy == string(appsv1beta2.ElectionStrategyMark) {
-		// Add mark strategy match labels
-		matchLabels = nodepool.Spec.LeaderNodeLabelSelector
+		// Add mark strategy match labels safely without overwriting matchLabels with a potential nil map
+		maps.Copy(matchLabels, nodepool.Spec.LeaderNodeLabelSelector)
 	}
 	matchLabels[projectinfo.GetNodePoolLabel()] = nodepool.GetName()
 
diff --git a/pkg/yurtmanager/controller/hubleader/hubleader_controller_test.go b/pkg/yurtmanager/controller/hubleader/hubleader_controller_test.go
index b347b967c79..db8e0ad0ffe 100644
--- a/pkg/yurtmanager/controller/hubleader/hubleader_controller_test.go
+++ b/pkg/yurtmanager/controller/hubleader/hubleader_controller_test.go
@@ -328,6 +328,48 @@ func TestReconcile(t *testing.T) {
 			},
 			expectErr: false,
 		},
+		"mark election strategy with nil LeaderNodeLabelSelector": {
+			pool: &appsv1beta2.NodePool{
+				ObjectMeta: metav1.ObjectMeta{
+					Name: "hangzhou",
+				},
+				Spec: appsv1beta2.NodePoolSpec{
+					Type: appsv1beta2.Edge,
+					Labels: map[string]string{
+						"region": "hangzhou",
+					},
+					LeaderElectionStrategy:  string(appsv1beta2.ElectionStrategyMark),
+					LeaderNodeLabelSelector: nil,
+					LeaderReplicas:          1,
+					EnableLeaderElection:    true,
+				},
+			},
+			expectedNodePool: &appsv1beta2.NodePool{
+				ObjectMeta: metav1.ObjectMeta{
+					Name: "hangzhou",
+				},
+				Spec: appsv1beta2.NodePoolSpec{
+					Type: appsv1beta2.Edge,
+					Labels: map[string]string{
+						"region": "hangzhou",
+					},
+					LeaderElectionStrategy:  string(appsv1beta2.ElectionStrategyMark),
+					LeaderNodeLabelSelector: nil,
+					EnableLeaderElection:    true,
+					LeaderReplicas:          1,
+				},
+				Status: appsv1beta2.NodePoolStatus{
+					LeaderEndpoints: []appsv1beta2.Leader{
+						{
+							NodeName: "ready with internal IP",
+							Address:  "10.0.0.1",
+						},
+					},
+					LeaderNum: 1,
+				},
+			},
+			expectErr: false,
+		},
 		"no potential leaders in hangzhou with mark strategy": {
 			pool: &appsv1beta2.NodePool{
 				ObjectMeta: metav1.ObjectMeta{