Wheelchair seat cushion

A seat cushion of a wheelchair comprises a seat cushion outer frame, a cotton cushion, a seat cushion bottom shell, a motor control board, an inner board and a ventilator. The cotton cushion is embedded into the cotton cushion groove to be fixed; clamping jaws are arranged on the top edges of the two sides of the seat cushion bottom shell, bottom shell fixing pieces are arranged at the top end ofthe inner wall of the seat cushion bottom shell in the circumferential direction, and inner plate fixing holes are defined by the bottom shell fixing pieces. The center of the bottom surface of the seat cushion bottom shell is in a through hole shape to form a seat cushion bottom shell through hole; the motor control panel is arranged at the bottom end of the inner wall of the cushion bottom shell; an inner plate folded edge is circumferentially arranged on the upper surface of the inner plate; the ventilator is arranged in the center of the bottom surface of the inner plate; the folded edge of the inner plate is plac