Sliding door and window capable of realizing automatic reset after derailing by using folded pulley

The invention relates to the technical field of sliding doors and windows, and discloses a sliding door and window capable of realizing automatic reset after derailing by using a folded pulley. The sliding door and window comprises a frame, an inner wall of the frame is slidingly connected with a limiting rod, and one side, away from the inner wall of the frame, of the limiting rod is fixedly connected with a baffle; an outer side of the pulley is slidingly connected with a squeeze ring, an inner wall of the squeeze ring is fixedly connected with a buffer spring, and one side, closing to the baffle, of a rope roller is fixedly connected with a window. The sliding door and window capable of realizing automatic reset after derailing by using the folded pulley drives a connecting rod to moveby the squeeze ring, the connecting rod drives a top rod to slide in the pulley, and at this time, a sliding rail pushes a swing block to swing, and the swing block is pressed on the sliding rail; meanwhile, the window drives a touch plate to move, the touch plate drives a paddle to move, and the paddle drives a roller to move; and when the roller moves, the limiting rod is no longer restricting acompression spring, and the effect of automatic resetting after the pulley derails can be achieved by the cooperative use of the compression spring and the baffle.