diff --git a/Src/Asp.Net/SqlServerTest/UnitTest/UFastest.cs b/Src/Asp.Net/SqlServerTest/UnitTest/UFastest.cs
index ae3496b28..35a6f773f 100644
--- a/Src/Asp.Net/SqlServerTest/UnitTest/UFastest.cs
+++ b/Src/Asp.Net/SqlServerTest/UnitTest/UFastest.cs
@@ -39,9 +39,19 @@ namespace OrmTest
             }
 
             db.Fastest<Test2>().BulkUpdate(updateList);
-
+            db.CodeFirst.InitTables<UnitTestoffset11>();
+            db.Fastest<UnitTestoffset11>().BulkCopy(new List<UnitTestoffset11>() {
+            new  UnitTestoffset11 { },
+             new  UnitTestoffset11 {  DateTimeOffset= DateTimeOffset.Now}
+            });
+            var list = db.Queryable<UnitTestoffset11>().ToList();
             Console.WriteLine("用例跑完");
         }
+        public class UnitTestoffset11 
+        {
+            [SugarColumn(IsNullable =true)]
+            public DateTimeOffset? DateTimeOffset { get; set; }
+        }
 
         [SugarTable("UnitFastest0011a")]
         public class Test2
diff --git a/Src/Asp.Net/SqlSugar/Abstract/FastestProvider/Private.cs b/Src/Asp.Net/SqlSugar/Abstract/FastestProvider/Private.cs
index 0ce09669a..ba5ae330a 100644
--- a/Src/Asp.Net/SqlSugar/Abstract/FastestProvider/Private.cs
+++ b/Src/Asp.Net/SqlSugar/Abstract/FastestProvider/Private.cs
@@ -85,7 +85,7 @@ namespace SqlSugar
                             value = DBNull.Value;
                         }
                     }
-                    else if (column.UnderType == UtilConstants.DateTimeOffsetType&& value!=null) 
+                    else if (column.UnderType == UtilConstants.DateTimeOffsetType&& value!=null && value != DBNull.Value) 
                     {
                         value = UtilMethods.ConvertFromDateTimeOffset((DateTimeOffset)value);
                     }