The invention relates to the motor field, concretely a sparkproof AC motor which comprises an electric casing, a stator, a rotor, a motor main shaft and a fan, and also comprises a brush cover, an insulating sleeve, slip rings, a brush rod, brushes, dedusting bags, temperature sensors and press cylinders. Each brush comprises brush holders, a binding post and a pair of carbon rods; one end of each press cylinder is fixedly connected to the brush cover, and the other end is in contact with the upper end surface of a carbon rod; the brush cover comprises a cover body and a rotation block; left and right bush holders of each brush are both provided with a temperature sensor. The sparkproof AC motor has a more humanized design, is convenient to operate, and can save the labor, and reduce the generation possibility of electric sparks.