diff --git a/Src/Asp.Net/PgSqlTest/UnitTest/UJson.cs b/Src/Asp.Net/PgSqlTest/UnitTest/UJson.cs
index 8d28a0fdf..780d59024 100644
--- a/Src/Asp.Net/PgSqlTest/UnitTest/UJson.cs
+++ b/Src/Asp.Net/PgSqlTest/UnitTest/UJson.cs
@@ -45,8 +45,18 @@ namespace OrmTest
             }
             }).ExecuteCommand();
             var xxx = Db.Queryable<UnitArray311>().ToList();
+
+            Db.CodeFirst.InitTables<UnitUUID1XX>();
+            Db.Insertable(new UnitUUID1XX() { ID = Guid.NewGuid() }).ExecuteCommand();
+            var x1 = Db.Queryable<UnitUUID1XX>().ToList();
         }
     }
+
+    public class UnitUUID1XX
+    {
+        [SugarColumn(ColumnDataType ="uuid")]
+        public Guid ID { get; set; }
+    }
     public class UnitArray311 
     {
         [SugarColumn(IsArray =true,ColumnDataType ="text []" )]
diff --git a/Src/Asp.Net/SqlSugar/Realization/PostgreSQL/DbMaintenance/PostgreSQLDbMaintenance.cs b/Src/Asp.Net/SqlSugar/Realization/PostgreSQL/DbMaintenance/PostgreSQLDbMaintenance.cs
index 7e54d13fc..497017d60 100644
--- a/Src/Asp.Net/SqlSugar/Realization/PostgreSQL/DbMaintenance/PostgreSQLDbMaintenance.cs
+++ b/Src/Asp.Net/SqlSugar/Realization/PostgreSQL/DbMaintenance/PostgreSQLDbMaintenance.cs
@@ -354,11 +354,11 @@ namespace SqlSugar
                 {
                     item.Length = 1;
                 }
-                if (dataType == "uuid")
-                {
-                    item.Length = 50;
-                    dataType = "varchar";
-                }
+                //if (dataType == "uuid")
+                //{
+                //    item.Length = 50;
+                //    dataType = "varchar";
+                //}
                 string dataSize = item.Length > 0 ? string.Format("({0})", item.Length) : null;
                 if (item.DecimalDigits > 0&&item.Length>0 && dataType == "numeric") 
                 {