diff --git a/Src/Asp.NetCore2/SqlSugar/Abstract/DbBindProvider/DbBindProvider.cs b/Src/Asp.NetCore2/SqlSugar/Abstract/DbBindProvider/DbBindProvider.cs
index 1cb6ea982..aa797e00c 100644
--- a/Src/Asp.NetCore2/SqlSugar/Abstract/DbBindProvider/DbBindProvider.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Abstract/DbBindProvider/DbBindProvider.cs
@@ -19,7 +19,7 @@ namespace SqlSugar
         public virtual string GetDbTypeName(string csharpTypeName)
         {
             if (csharpTypeName == UtilConstants.ByteArrayType.Name)
-                return "bytea";
+                return "varbinary";
             if (csharpTypeName.ToLower() == "int32")
                 csharpTypeName = "int";
             if (csharpTypeName.ToLower() == "int16")
diff --git a/Src/Asp.NetCore2/SqlSugar/Realization/PostgreSQL/DbBind/PostgreSQLDbBind.cs b/Src/Asp.NetCore2/SqlSugar/Realization/PostgreSQL/DbBind/PostgreSQLDbBind.cs
index 7e4323238..3b2e9e594 100644
--- a/Src/Asp.NetCore2/SqlSugar/Realization/PostgreSQL/DbBind/PostgreSQLDbBind.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Realization/PostgreSQL/DbBind/PostgreSQLDbBind.cs
@@ -6,6 +6,26 @@ namespace SqlSugar
 {
     public class PostgreSQLDbBind : DbBindProvider
     {
+        public override string GetDbTypeName(string csharpTypeName)
+        {
+            if (csharpTypeName == UtilConstants.ByteArrayType.Name)
+                return "bytea";
+            if (csharpTypeName.ToLower() == "int32")
+                csharpTypeName = "int";
+            if (csharpTypeName.ToLower() == "int16")
+                csharpTypeName = "short";
+            if (csharpTypeName.ToLower() == "int64")
+                csharpTypeName = "long";
+            if (csharpTypeName.ToLower().IsIn("boolean", "bool"))
+                csharpTypeName = "bool";
+            if (csharpTypeName == "DateTimeOffset")
+                csharpTypeName = "DateTime";
+            var mappings = this.MappingTypes.Where(it => it.Value.ToString().Equals(csharpTypeName, StringComparison.CurrentCultureIgnoreCase)).ToList();
+            if (mappings != null && mappings.Count > 0)
+                return mappings.First().Key;
+            else
+                return "varchar";
+        }
         public override string GetPropertyTypeName(string dbTypeName)
         {
             dbTypeName = dbTypeName.ToLower();
diff --git a/Src/Asp.NetCore2/SqlSugar/Realization/SqlServer/CodeFirst/SqlServerCodeFirst.cs b/Src/Asp.NetCore2/SqlSugar/Realization/SqlServer/CodeFirst/SqlServerCodeFirst.cs
index 29cd76fc4..962763048 100644
--- a/Src/Asp.NetCore2/SqlSugar/Realization/SqlServer/CodeFirst/SqlServerCodeFirst.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Realization/SqlServer/CodeFirst/SqlServerCodeFirst.cs
@@ -30,5 +30,26 @@ namespace SqlSugar
                 return table;
             }
         }
+
+        protected override void GetDbType(EntityColumnInfo item, Type propertyType, DbColumnInfo result)
+        {
+            if (!string.IsNullOrEmpty(item.DataType))
+            {
+                result.DataType = item.DataType;
+            }
+            else if (propertyType.IsEnum())
+            {
+                result.DataType = this.Context.Ado.DbBind.GetDbTypeName(item.Length > 9 ? UtilConstants.LongType.Name : UtilConstants.IntType.Name);
+            }
+            else
+            {
+                var name = GetType(propertyType.Name);
+                if (name == "varbinary" && item.Length == 0) 
+                {
+                    name = "varbinary(max)";
+                }
+                result.DataType = this.Context.Ado.DbBind.GetDbTypeName(name);
+            }
+        }
     }
 }