The invention relates to a bird damage prevention grading ring automatic cleaning device. The device comprises a bird repellent device rotating shaft and a bird repellent device fixing shaft, whereina stator magnet is arranged on the bird repellent device rotating shaft; and two sets of coils are wound around the bird repellent device fixing shaft in a row winding mode. Two ends of each coil areconnected with a rotor conductor through an electric brush, the coils and the rotor conductor are connected to form a closed loop, the rotor magnets are fixedly arranged on two sides of the electric brush, and the rotor conductor penetrates through an iron core groove of each rotor magnet, and a middle point of the rotor conductor is connected with a cleaning brush.