Screen door and window for door and window

The utility model discloses a screen door and window used on a door and window, which belongs to the technical field of screen doors and windows and comprises a door and window frame, an assembly opening is arranged on the door and window frame, a screen is mounted in the assembly opening, an insertion opening communicated with the assembly opening is arranged on the door and window frame, and a frame is slidably inserted in the insertion opening. The gauze element is fixedly installed on the frame through a dismounting and mounting mechanism, the frame is fixed to the door and window frame through a fastening mechanism, the frame is composed of a vertically-arranged first base plate and two horizontally-arranged second base plates, and the two second base plates are integrally connected to the end portions of the upper end and the lower end of the first base plate. The screen door and window solves the technical problem that the replacement cost is high due to the fact that an existing screen door and window