diff --git a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar/Utilities/UtilMethods.cs b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar/Utilities/UtilMethods.cs
index b7ee9dbb9..19bdfda00 100644
--- a/Src/Asp.NetCore2/SqlSeverTest/SqlSugar/Utilities/UtilMethods.cs
+++ b/Src/Asp.NetCore2/SqlSeverTest/SqlSugar/Utilities/UtilMethods.cs
@@ -24,6 +24,7 @@ namespace SqlSugar
         {
             if (value != null)
             {
+                destinationType = UtilMethods.GetUnderType(destinationType);
                 var sourceType = value.GetType();
 
                 var destinationConverter = TypeDescriptor.GetConverter(destinationType);
diff --git a/Src/Asp.NetCore2/SqlSeverTest/SqliteTest/DataBase/SqlSugar4xTest.sqlite b/Src/Asp.NetCore2/SqlSeverTest/SqliteTest/DataBase/SqlSugar4xTest.sqlite
index c7d4a4eba..499cb14a0 100644
Binary files a/Src/Asp.NetCore2/SqlSeverTest/SqliteTest/DataBase/SqlSugar4xTest.sqlite and b/Src/Asp.NetCore2/SqlSeverTest/SqliteTest/DataBase/SqlSugar4xTest.sqlite differ