diff --git a/business/jxutils/jxutils_sync_map.go b/business/jxutils/jxutils_sync_map.go
index 92827aea6..99c2beeab 100644
--- a/business/jxutils/jxutils_sync_map.go
+++ b/business/jxutils/jxutils_sync_map.go
@@ -24,6 +24,6 @@ func (m *SyncMapWithTimeout) Delete(key interface{}) {
 	if value, ok := m.timers.Load(key); ok {
 		timer := value.(*time.Timer)
 		timer.Stop()
+		m.timers.Delete(key)
 	}
-	m.timers.Delete(key)
 }
diff --git a/business/jxutils/tasksch/parallel_task.go b/business/jxutils/tasksch/parallel_task.go
index de62f3cf8..d402e8a2c 100644
--- a/business/jxutils/tasksch/parallel_task.go
+++ b/business/jxutils/tasksch/parallel_task.go
@@ -179,6 +179,7 @@ func (task *ParallelTask) Run() {
 
 		close(task.subFinishChan)
 		task.jobList = nil // 如果不释放，任务被管理的话，会导致内存不能释放
+		task.worker = nil
 	})
 }
 
diff --git a/business/jxutils/tasksch/sequence_task.go b/business/jxutils/tasksch/sequence_task.go
index c443c85e6..7bcd3faac 100644
--- a/business/jxutils/tasksch/sequence_task.go
+++ b/business/jxutils/tasksch/sequence_task.go
@@ -59,6 +59,8 @@ func (task *SeqTask) Run() {
 		task.Result = taskResult
 		task.mainErr = taskErr
 		task.locker.Unlock()
+
+		task.worker = nil
 	})
 }