diff --git a/apps/wpm/models.py b/apps/wpm/models.py
index 723e2832..e45d71c2 100644
--- a/apps/wpm/models.py
+++ b/apps/wpm/models.py
@@ -706,12 +706,15 @@ class BatchSt(BaseModel):
         unique_together = [("batch", "version")]
 
     @classmethod
-    def g_create(cls, batch:str, mio=None, mioitem=None, handover=None, mlog=None, material_start=None, check_mat_start=False, exclude_batchst_ids=[]):
+    def g_create(cls, batch:str, mio=None, mioitem=None, handover=None, mlog=None, material_start=None, check_mat_start=False, exclude_batchst_ids=[], check_batch_exist=False):
         """
         创建新的批次
         """
         if mioitem:
             mio = mioitem.mio
+        if check_batch_exist:
+            if cls.objects.filter(batch=batch).exclude(id__in=exclude_batchst_ids).exists():
+                raise ParseError(f"{batch}-该批次号已存在不可使用")
         node, created = cls.safe_get_or_create(batch=batch, version=1, defaults={
             "mio":mio, "mioitem":mioitem, "handover":handover, "mlog":mlog, "material_start":material_start})
         if not created and check_mat_start:
diff --git a/apps/wpm/services.py b/apps/wpm/services.py
index 2de29c1f..4f9cc43a 100644
--- a/apps/wpm/services.py
+++ b/apps/wpm/services.py
@@ -727,12 +727,15 @@ def handover_submit(handover:Handover, user: User, now: Union[datetime.datetime,
     batches = []
     mids = []
     exclude_batchst_ids = []
+    check_batch_exist = False
     if mtype == Handover.H_MERGE:
         if new_batch:
             batches = [new_batch]
         else:
             raise ParseError("合并批次时请提供新批次号")
-        target_b, _ = BatchSt.g_create(batch=new_batch, handover=handover, material_start=material)
+        if handover.new_wm is None:
+            check_batch_exist = True
+        target_b, _ = BatchSt.g_create(batch=new_batch, handover=handover, material_start=material, check_batch_exist=check_batch_exist)
         exclude_batchst_ids.append(target_b.id)
     elif mtype == Handover.H_DIV:
         if handover.wm is None:
@@ -761,6 +764,7 @@ def handover_submit(handover:Handover, user: User, now: Union[datetime.datetime,
                 batches_to_limit.append(batch)
             target, _ = BatchSt.g_create(batch=batch, handover=handover, material_start=material)
             exclude_batchst_ids.append(target.id)
+            # 这里暂时忽略check_batch_exist，因为拆批一般不会重复
             BatchLog.g_create(source=source_b, target=target, handover=handover, relation_type="split")
         else:
             batch = wm_from.batch