diff --git a/B3QingDaoWanFu/TypeIOCs/WeightBillTypeIoc.cs b/B3QingDaoWanFu/TypeIOCs/WeightBillTypeIoc.cs
index 490363c..2c6a197 100644
--- a/B3QingDaoWanFu/TypeIOCs/WeightBillTypeIoc.cs
+++ b/B3QingDaoWanFu/TypeIOCs/WeightBillTypeIoc.cs
@@ -17,6 +17,8 @@ namespace BWP.B3QingDaoWanFu.TypeIOCs
     {
       if (dmo.PayTarget == null)
         throw new Exception("付款对象不能为空");
+      if (dmo.BuyNum != dmo.FarmerDetails.Sum(x => x.Number ?? 0))
+        throw new Exception("收购头数与养殖户明细头数不相等");
     }
   }