diff --git a/src/views/emis/emisTmsSiteBatch/panel/BigBatchEditForm.vue b/src/views/emis/emisTmsSiteBatch/panel/BigBatchEditForm.vue
index 5ade27d5..bec0e6fb 100644
--- a/src/views/emis/emisTmsSiteBatch/panel/BigBatchEditForm.vue
+++ b/src/views/emis/emisTmsSiteBatch/panel/BigBatchEditForm.vue
@@ -667,6 +667,7 @@ export default {
           this.initBatchBillRel(this.form.batchNo);
 
           if(this.isCopy){
+            this.form.batchNo = null;
             getTmsGroupBatchNo().then(resPack=>{
               this.form.batchNo = resPack.data;
             });