diff --git a/DOAN.Service/MES/mm/MmRequirePlanService.cs b/DOAN.Service/MES/mm/MmRequirePlanService.cs
index 056396a..46eadf1 100644
--- a/DOAN.Service/MES/mm/MmRequirePlanService.cs
+++ b/DOAN.Service/MES/mm/MmRequirePlanService.cs
@@ -55,7 +55,7 @@ namespace DOAN.Service.group
                             //遍历所有子件
                             foreach (var item in boms)
                             {
-                                float need_num = (workorder_item.DeliveryNum.Value) * (float.Parse(item.Iusequantity));
+                                float need_num = (workorder_item.DeliveryNum??1) * (float.Parse(item.Iusequantity));
                                 if (need_Materials.ContainsKey(item.SubInvCode))
                                 {
                                     float pre_num = need_Materials[item.SubInvCode];