diff --git a/visualdev/Tnb.VisualDev.Engine/Core/FormDataParsing.cs b/visualdev/Tnb.VisualDev.Engine/Core/FormDataParsing.cs
index 5dd420a1..39a3b500 100644
--- a/visualdev/Tnb.VisualDev.Engine/Core/FormDataParsing.cs
+++ b/visualdev/Tnb.VisualDev.Engine/Core/FormDataParsing.cs
@@ -529,6 +529,8 @@ public class FormDataParsing : ITransient
                     return res.ToString().ParseToDateTime();
                 else if (model.__config__.jnpfKey.Equals(JnpfKeyConst.NUMINPUT) || model.__config__.jnpfKey.Equals(JnpfKeyConst.SWITCH))//modify by zhoukeda 2023427  开关默认数字
                     return res;
+                else if (model.__config__.jnpfKey.Equals(JnpfKeyConst.SELECT) && model.multiple)//modifyby zhoukeda 20230703 下拉框多选 数据保存为json
+                    return res.ToJsonString();
                 else return res.ToString();
             }
             else