diff --git a/Src/Asp.Net/MySqlTest/UnitTest/UCodeFirst.cs b/Src/Asp.Net/MySqlTest/UnitTest/UCodeFirst.cs
index 1d90372bd..dca17cb84 100644
--- a/Src/Asp.Net/MySqlTest/UnitTest/UCodeFirst.cs
+++ b/Src/Asp.Net/MySqlTest/UnitTest/UCodeFirst.cs
@@ -36,6 +36,12 @@ namespace OrmTest
                 b=it.b
             }).ToList();
             Db.CodeFirst.InitTables<UnitTest012213>();
+            Db.CodeFirst.InitTables<UnitTest3131>();
+        }
+
+        public class UnitTest3131 
+        {
+            public sbyte Id { get; set; }
         }
         public class UnitTest012213
         {
diff --git a/Src/Asp.Net/SqlSugar/Realization/MySql/DbBind/MySqlDbBind.cs b/Src/Asp.Net/SqlSugar/Realization/MySql/DbBind/MySqlDbBind.cs
index c85e4268a..04ea3e886 100644
--- a/Src/Asp.Net/SqlSugar/Realization/MySql/DbBind/MySqlDbBind.cs
+++ b/Src/Asp.Net/SqlSugar/Realization/MySql/DbBind/MySqlDbBind.cs
@@ -20,6 +20,8 @@ namespace SqlSugar
                 csharpTypeName = "long";
             if (csharpTypeName == "Boolean")
                 csharpTypeName = "bool";
+            if (csharpTypeName == "SByte")
+                csharpTypeName = "Byte";
             var mappings = this.MappingTypes.Where(it => it.Value.ToString().Equals(csharpTypeName, StringComparison.CurrentCultureIgnoreCase));
             return mappings.HasValue() ? mappings.First().Key : "varchar";
         }