diff --git a/src/Modules/SettleAccount/src/SettleAccount.Job/Services/Report/UnSettleDiffExportService.cs b/src/Modules/SettleAccount/src/SettleAccount.Job/Services/Report/UnSettleDiffExportService.cs
index b84cd7ef..b1ee4308 100644
--- a/src/Modules/SettleAccount/src/SettleAccount.Job/Services/Report/UnSettleDiffExportService.cs
+++ b/src/Modules/SettleAccount/src/SettleAccount.Job/Services/Report/UnSettleDiffExportService.cs
@@ -345,6 +345,7 @@ namespace SettleAccount.Job.Services.Report
                 {
                     itm.UnSettleQty = 1;
                 }
+                itm.DiffQty = itm.Qty - itm.UnSettleQty;
             }