diff --git a/Src/Asp.Net/SqlSugar/Realization/Dm/DbBind/DmDbBind.cs b/Src/Asp.Net/SqlSugar/Realization/Dm/DbBind/DmDbBind.cs
index 09340264a..e55dfdbcb 100644
--- a/Src/Asp.Net/SqlSugar/Realization/Dm/DbBind/DmDbBind.cs
+++ b/Src/Asp.Net/SqlSugar/Realization/Dm/DbBind/DmDbBind.cs
@@ -107,11 +107,11 @@ namespace SqlSugar
                   new KeyValuePair<string, CSharpDataType>("number",CSharpDataType.@long),
                   new KeyValuePair<string, CSharpDataType>("number",CSharpDataType.@bool),
                   new KeyValuePair<string, CSharpDataType>("boolean",CSharpDataType.@bool),
-                  new KeyValuePair<string, CSharpDataType>("bit",CSharpDataType.@bool),
+                  new KeyValuePair<string, CSharpDataType>("bit",CSharpDataType.@bool), 
+                  new KeyValuePair<string, CSharpDataType>("decimal",CSharpDataType.@decimal),
                   new KeyValuePair<string, CSharpDataType>("number",CSharpDataType.@decimal),
                   new KeyValuePair<string, CSharpDataType>("numeric",CSharpDataType.@decimal),
                   new KeyValuePair<string, CSharpDataType>("number",CSharpDataType.Single),
-                  new KeyValuePair<string, CSharpDataType>("decimal",CSharpDataType.@decimal),
                   new KeyValuePair<string, CSharpDataType>("decimal",CSharpDataType.Single),
                   new KeyValuePair<string, CSharpDataType>("dec",CSharpDataType.@decimal),
                   new KeyValuePair<string, SqlSugar.CSharpDataType>("double precision",CSharpDataType.@double),
diff --git a/Src/Asp.Net/SqlSugar/Realization/Dm/DbMaintenance/DmDbMaintenance.cs b/Src/Asp.Net/SqlSugar/Realization/Dm/DbMaintenance/DmDbMaintenance.cs
index ef4203948..b3cfac30f 100644
--- a/Src/Asp.Net/SqlSugar/Realization/Dm/DbMaintenance/DmDbMaintenance.cs
+++ b/Src/Asp.Net/SqlSugar/Realization/Dm/DbMaintenance/DmDbMaintenance.cs
@@ -468,6 +468,16 @@ WHERE table_name = '" + tableName + "'");
                         Length = row["ColumnSize"].ObjToInt(),
                         Scale = row["numericscale"].ObjToInt()
                     };
+                    if (column.DataType.EqualCase("number")|| column.DataType.EqualCase("decimal"))
+                    {
+                        column.Length = row["numericprecision"].ObjToInt();
+                        column.Scale = row["numericscale"].ObjToInt();
+                        column.DecimalDigits = row["numericscale"].ObjToInt();
+                        if (column.Length == 38 && column.Scale == 0)
+                        {
+                            column.Length = 22;
+                        }
+                    }
                     result.Add(column);
                 }
                 return result;
diff --git a/Src/Asp.Net/SqlSugar/Realization/Dm/SqlBuilder/DmInsertBuilder.cs b/Src/Asp.Net/SqlSugar/Realization/Dm/SqlBuilder/DmInsertBuilder.cs
index dc7ca4a79..b23ceacde 100644
--- a/Src/Asp.Net/SqlSugar/Realization/Dm/SqlBuilder/DmInsertBuilder.cs
+++ b/Src/Asp.Net/SqlSugar/Realization/Dm/SqlBuilder/DmInsertBuilder.cs
@@ -49,6 +49,11 @@ namespace SqlSugar
             {
                 result = result.Replace(";select @@identity", "");
             }
+            if (this.IsOffIdentity)
+            {
+                var tableName = this.GetTableNameString;
+                result = $"SET IDENTITY_INSERT {tableName} ON;" + result.TrimEnd(';') + $";SET IDENTITY_INSERT {tableName} OFF"; ;
+            }
             return result;
         }