diff --git a/src/BarCode.Web.Domain/Entitys/Box.cs b/src/BarCode.Web.Domain/Entitys/Box.cs
index a09e408..12fa763 100644
--- a/src/BarCode.Web.Domain/Entitys/Box.cs
+++ b/src/BarCode.Web.Domain/Entitys/Box.cs
@@ -128,7 +128,7 @@ namespace BarCode.Web.Domain.Entitys
             if (detail == null)
                 return Result.ReFailure(ResultCodes.BoxMaterialNoDataError);
             var serial = detail.SerialNumbers.FirstOrDefault(f => f.Equals(serialNumber));
-            if (serial == null)
+            if (serial == null && isNotCount!="1")
                 return Result.ReFailure(ResultCodes.BoxSerialNumberNoDataError);
             detail.SerialNumbers.Remove(serialNumber);