diff --git a/MyCode.Project.Services/Implementation/PurchaseOrder/PurchaseOrderService.cs b/MyCode.Project.Services/Implementation/PurchaseOrder/PurchaseOrderService.cs
index 995e7ff..c3d07c4 100644
--- a/MyCode.Project.Services/Implementation/PurchaseOrder/PurchaseOrderService.cs
+++ b/MyCode.Project.Services/Implementation/PurchaseOrder/PurchaseOrderService.cs
@@ -225,6 +225,8 @@ namespace MyCode.Project.Services.Implementation
             act.NeedUpDateFields.Add("FPOOrderEntry");
             act.NeedUpDateFields.Add("FSupDueDate");
             act.NeedUpDateFields.Add("F_YRVD_Date_re5");
+            DateTime totday = DateTime.Now.Date;
+
             list.ForEach(t =>
             {
                 var temp = updateList.FirstOrDefault(h => h.Id == t.Id);
@@ -234,6 +236,10 @@ namespace MyCode.Project.Services.Implementation
                     {
                         throw new BaseException($"修改承诺交期失败，已经有值了不许第二次修改");
                     }
+                    if(temp.NewTime< totday)
+                    {
+                        throw new BaseException($"修改承诺交期失败，日期不能小于当天日期");
+                    }
                     t.ChengNuoJiaoQi = temp.NewTime;
                 }
                 try