Wheelchair

The invention provides a wheelchair which comprises a seat, a backrest is mounted at the rear end of the seat, and the backrest comprises a backrest body fixed to the seat and a movable backrest slidably mounted on the seat; the cushion is rotatably mounted on the seat; the driving assembly is mounted on the seat, and the driving assembly comprises a driver mounted on the seat and a lead screw rotationally connected with the driver; the linkage assembly is movably installed on the seat and comprises a lead screw nut matched with the lead screw, a first push rod and a second push rod which are rotatably installed on the lead screw nut, a sliding block rotatably installed on the first push rod, and two lifting rods which are fixed to the two sides of the sliding block respectively and are in rotatable contact with the bottom face of the seat cushion; the second push rod is rotatably connected with the movable backrest. The seat cushion of the wheelchair helps a user to get up, and meanwhile, the movable backres