diff --git a/taier-data-develop/src/main/java/com/dtstack/taier/develop/service/develop/impl/DevelopTaskTaskService.java b/taier-data-develop/src/main/java/com/dtstack/taier/develop/service/develop/impl/DevelopTaskTaskService.java
index d2f0f7b61d..db6dcb56f3 100644
--- a/taier-data-develop/src/main/java/com/dtstack/taier/develop/service/develop/impl/DevelopTaskTaskService.java
+++ b/taier-data-develop/src/main/java/com/dtstack/taier/develop/service/develop/impl/DevelopTaskTaskService.java
@@ -45,13 +45,13 @@ public class DevelopTaskTaskService extends ServiceImpl<DevelopTaskTaskMapper, D
 
     @Transactional(rollbackFor = Exception.class)
     public void addOrUpdateTaskTask(Long taskId, List<TaskVO> dependencyTasks) {
+        this.remove(Wrappers.lambdaQuery(DevelopTaskTask.class)
+                .eq(DevelopTaskTask::getTaskId, taskId));
+
         if (CollectionUtils.isEmpty(dependencyTasks)) {
             return;
         }
 
-        this.remove(Wrappers.lambdaQuery(DevelopTaskTask.class)
-                .eq(DevelopTaskTask::getTaskId, taskId));
-
         List<DevelopTaskTask> taskTaskList = dependencyTasks.stream().map(taskVO -> {
             DevelopTaskTask taskTask = new DevelopTaskTask();
             taskTask.setParentTaskId(taskVO.getId());