diff --git a/snail-job-server/snail-job-server-web/src/main/java/com/aizuda/snailjob/server/web/service/impl/WorkflowServiceImpl.java b/snail-job-server/snail-job-server-web/src/main/java/com/aizuda/snailjob/server/web/service/impl/WorkflowServiceImpl.java
index 83eb12e8..b60f6915 100644
--- a/snail-job-server/snail-job-server-web/src/main/java/com/aizuda/snailjob/server/web/service/impl/WorkflowServiceImpl.java
+++ b/snail-job-server/snail-job-server-web/src/main/java/com/aizuda/snailjob/server/web/service/impl/WorkflowServiceImpl.java
@@ -237,6 +237,13 @@ public class WorkflowServiceImpl implements WorkflowService {
         // 获取DAG节点配置
         NodeConfig nodeConfig = workflowRequestVO.getNodeConfig();
 
+        //判断版本标签是否重复
+        WorkflowHistory wfh = workflowHistoryMapper.selectOne(new LambdaQueryWrapper<WorkflowHistory>()
+                .eq(WorkflowHistory::getId, workflow.getId())
+                .eq(WorkflowHistory::getVersionTag,workflowRequestVO.getVersionTag()));
+        if(!Objects.isNull(wfh)){
+            throw new SnailJobServerException("版本标签重复,请重新输入!");
+        }
         //取履历表中 最大得版本号 + 1
         int version = workflow.getVersion();
         int version_max =  workflowHistoryMapper.selectMaxVersionByWorkflowId(workflow.getId());
@@ -296,12 +303,6 @@ public class WorkflowServiceImpl implements WorkflowService {
                                 .eq(Workflow::getVersion, version)) > 0,
                 () -> new SnailJobServerException("Update failed"));
 
-        //工作流表更新后插入履历表
-        //准备数据到履历表add 20250520
-//        WorkflowHistory history = new WorkflowHistory();
-//        Workflow workflow1 = workflowMapper.selectById(workflow.getId());
-//        BeanUtils.copyProperties(workflow1, history);
-//        history.setCreateDt(LocalDateTime.now());
         //20251124 add
         // 如果是保存新版本,保存到历史表
         if (saveAsNewVersion) {