diff --git a/cdnsystem/supervisor/cdn/storage/disk/disk.go b/cdnsystem/supervisor/cdn/storage/disk/disk.go
index c35377c4bbb..f058c5c8bf9 100644
--- a/cdnsystem/supervisor/cdn/storage/disk/disk.go
+++ b/cdnsystem/supervisor/cdn/storage/disk/disk.go
@@ -131,10 +131,7 @@ func (s *diskStorageMgr) GC() error {
 	for _, taskID := range gcTaskIDs {
 		synclock.Lock(taskID, false)
 		// try to ensure the taskID is not using again
-		if _, err := s.taskMgr.Get(taskID); err == nil || !cdnerrors.IsDataNotFound(err) {
-			if err != nil {
-				logger.GcLogger.With("type", "disk").Errorf("failed to get taskID(%s): %v", taskID, err)
-			}
+		if s.taskMgr.Exist(taskID) {
 			synclock.UnLock(taskID, false)
 			continue
 		}
diff --git a/cdnsystem/supervisor/mock/mock_task_mgr.go b/cdnsystem/supervisor/mock/mock_task_mgr.go
index caf229d7377..ab4517797e0 100644
--- a/cdnsystem/supervisor/mock/mock_task_mgr.go
+++ b/cdnsystem/supervisor/mock/mock_task_mgr.go
@@ -50,6 +50,20 @@ func (mr *MockSeedTaskMgrMockRecorder) Delete(arg0 interface{}) *gomock.Call {
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Delete", reflect.TypeOf((*MockSeedTaskMgr)(nil).Delete), arg0)
 }
 
+// Exist mocks base method.
+func (m *MockSeedTaskMgr) Exist(arg0 string) bool {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "Exist", arg0)
+	ret0, _ := ret[0].(bool)
+	return ret0
+}
+
+// Exist indicates an expected call of Exist.
+func (mr *MockSeedTaskMgrMockRecorder) Exist(arg0 interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Exist", reflect.TypeOf((*MockSeedTaskMgr)(nil).Exist), arg0)
+}
+
 // Get mocks base method.
 func (m *MockSeedTaskMgr) Get(arg0 string) (*types.SeedTask, error) {
 	m.ctrl.T.Helper()
diff --git a/cdnsystem/supervisor/task/manager.go b/cdnsystem/supervisor/task/manager.go
index 60c17f7781f..538feb95284 100644
--- a/cdnsystem/supervisor/task/manager.go
+++ b/cdnsystem/supervisor/task/manager.go
@@ -165,10 +165,6 @@ func (tm *Manager) getTask(taskID string) (*types.SeedTask, error) {
 		}
 		return nil, err
 	}
-	// update accessTime for taskID
-	if err := tm.accessTimeMap.Add(taskID, time.Now()); err != nil {
-		logger.WithTaskID(taskID).Warnf("failed to update accessTime: %v", err)
-	}
 	// type assertion
 	if info, ok := v.(*types.SeedTask); ok {
 		return info, nil
@@ -177,7 +173,17 @@ func (tm *Manager) getTask(taskID string) (*types.SeedTask, error) {
 }
 
 func (tm Manager) Get(taskID string) (*types.SeedTask, error) {
-	return tm.getTask(taskID)
+	task, err := tm.getTask(taskID)
+	// update accessTime for taskID
+	if err := tm.accessTimeMap.Add(taskID, time.Now()); err != nil {
+		logger.WithTaskID(taskID).Warnf("failed to update accessTime: %v", err)
+	}
+	return task, err
+}
+
+func (tm Manager) Exist(taskID string) bool {
+	_, err := tm.taskStore.Get(taskID)
+	return err == nil || !cdnerrors.IsDataNotFound(err)
 }
 
 func (tm Manager) GetAccessTime() (*syncmap.SyncMap, error) {
diff --git a/cdnsystem/supervisor/task_mgr.go b/cdnsystem/supervisor/task_mgr.go
index 358117178d8..1b383ec313b 100644
--- a/cdnsystem/supervisor/task_mgr.go
+++ b/cdnsystem/supervisor/task_mgr.go
@@ -35,6 +35,9 @@ type SeedTaskMgr interface {
 	// Get get task Info with specified taskId.
 	Get(string) (*types.SeedTask, error)
 
+	// Exist check task existence with specified taskId.
+	Exist(string) bool
+
 	// GetAccessTime get all tasks accessTime.
 	GetAccessTime() (*syncmap.SyncMap, error)