diff --git a/Src/Asp.Net/MySqlTest/UnitTest/UCodeFirst.cs b/Src/Asp.Net/MySqlTest/UnitTest/UCodeFirst.cs
index ac6765348..bd3b4936f 100644
--- a/Src/Asp.Net/MySqlTest/UnitTest/UCodeFirst.cs
+++ b/Src/Asp.Net/MySqlTest/UnitTest/UCodeFirst.cs
@@ -19,9 +19,21 @@ namespace OrmTest
                 Id = 1,
                 Id2 = 2,
                 Id3 = 3,
-                Id4=4
+                Id4 = 4
             }).ExecuteCommand();
             var list = Db.Queryable<UnitCodeTest2222>().ToList();
+            Db.CodeFirst.InitTables<UnitCodeTest2a2c22>();
+            Db.Insertable(new UnitCodeTest2a2c22()
+            {
+                a = 1,
+                b = new byte[] { 1, 2, 3 }
+            })
+            .ExecuteCommand();
+            var xx=Db.Queryable<UnitCodeTest2a2c22>().Select(it => new
+            {
+                id=it.a,
+                b=it.b
+            }).ToList();
         }
         public class UnitCodeTest1
         {
@@ -30,6 +42,14 @@ namespace OrmTest
             [SqlSugar.SugarColumn(DefaultValue="now()", IndexGroupNameList =new string[] {"group1" } )]
             public DateTime? CreateDate { get; set; }
         }
+
+        public class UnitCodeTest2a2c22
+        {
+            public int a { get; set; }
+            [SqlSugar.SugarColumn(ColumnDataType ="blob")]
+            public byte[] b { get; set; }
+        }
+
         public class UnitCodeTest2222
         {
             public uint Id { get; set; }