The utility model discloses a pneumatic switch type air valve which comprises a valve sleeve, a valve block is arranged in the valve sleeve, limiting pieces are arranged on the two sides in the valve sleeve, a closing plate is arranged at the top of the valve block, a valve shaft is arranged at the top of the closing plate, a gear is arranged at the top of the valve shaft, and an installation sleeve is arranged at the top of the valve sleeve. According to the air valve, the valve plate is limited through the limiting piece, the valve plate is kept at 90-180 degrees all the time, the sealing
rubber ring is in
butt joint with the sealing groove, the sealing
rubber ring is in
butt joint with the sealing groove, the sealing
rubber ring is in
butt joint with the sealing groove, the sealing rubber ring is in butt joint with the sealing groove, the sealing rubber ring is in butt joint with the sealing groove, and the sealing rubber ring is in butt joint with the sealing groove. A rack is arranged in the mounting sleeve, an air cylinder is arranged on the outer side of the mounting sleeve, and a spring is arranged at the top of the air cylinder. According to the air valve, the valve plate has a good sealing effect when the valve plate is closed, a certain buffering effect is achieved through the push plate when the air cylinder pushes and pulls back the push plate, so that the damage condition of the air valve is reduced, the limiting bolt is limited through the limiting opening, and the stability of the push plate during buffering is guaranteed.