diff --git a/dolphinscheduler-api/src/main/java/org/apache/dolphinscheduler/api/service/impl/TaskDefinitionServiceImpl.java b/dolphinscheduler-api/src/main/java/org/apache/dolphinscheduler/api/service/impl/TaskDefinitionServiceImpl.java
index d7381f925670b6f6d2bcf4a01a4638ab2ece551c..9e30359d764c508f524a097b1ae43a912cd5d1ff 100644
--- a/dolphinscheduler-api/src/main/java/org/apache/dolphinscheduler/api/service/impl/TaskDefinitionServiceImpl.java
+++ b/dolphinscheduler-api/src/main/java/org/apache/dolphinscheduler/api/service/impl/TaskDefinitionServiceImpl.java
@@ -487,6 +487,7 @@ public class TaskDefinitionServiceImpl extends BaseServiceImpl implements TaskDe
         taskDefinitionToUpdate.setOperator(loginUser.getId());
         taskDefinitionToUpdate.setOperateTime(now);
         taskDefinitionToUpdate.setCreateTime(now);
+        taskDefinitionToUpdate.setId(null);
         int insert = taskDefinitionLogMapper.insert(taskDefinitionToUpdate);
         if ((update & insert) != 1) {
             logger.error("Update task definition or definitionLog error, projectCode:{}, taskDefinitionCode:{}.", projectCode, taskCode);