diff --git a/src/Modules/SettleAccount/src/SettleAccount.Application/Entities/WMS/WmsUnInterface.cs b/src/Modules/SettleAccount/src/SettleAccount.Application/Entities/WMS/WmsUnInterface.cs
index e4832cd0..f6896fbc 100644
--- a/src/Modules/SettleAccount/src/SettleAccount.Application/Entities/WMS/WmsUnInterface.cs
+++ b/src/Modules/SettleAccount/src/SettleAccount.Application/Entities/WMS/WmsUnInterface.cs
@@ -84,7 +84,7 @@ namespace Win.Sfs.SettleAccount.Entities.WMS
                            join itm2 in _existLst
                  on new { BillNum=itm1.结算单, MaterialCode=itm1.物料号, Pric=itm1.开票单价 }
                  equals new { BillNum = itm2.BillNum, MaterialCode = itm2.MaterialCode, Pric = itm2.Price } into temp1
-                           from tm1 in temp1.DefaultIfEmpty()
+                           from tm1 in temp1.DefaultIfEmpty() where tm1 is null
                            select itm1;
                 var _difflst=_diffls.ToList();
                 List<WmsDetailReport> _lst = new List<WmsDetailReport>();