diff --git a/AMESCoreStudio.WebApi/DTO/BLL/BarCodeCheckDto.cs b/AMESCoreStudio.WebApi/DTO/BLL/BarCodeCheckDto.cs
index 8d1dbb61..7a1f204f 100644
--- a/AMESCoreStudio.WebApi/DTO/BLL/BarCodeCheckDto.cs
+++ b/AMESCoreStudio.WebApi/DTO/BLL/BarCodeCheckDto.cs
@@ -12,6 +12,11 @@ namespace AMESCoreStudio.WebApi.DTO.AMES
     [DataContract]
     public class BarCodeCheckDto
     {
+        public BarCodeCheckDto()
+        {
+            inputItems = new List<inputItem>();
+            outfits = new List<Outfit>();
+        }
 
         /// <summary>
         /// 工單號碼