Automatic air canon

The utility model relates to an air cannon, in particular to a remote-control type automatic air cannon, which comprises an air storage tank internally provided with a pneumatic release assembly. The circumferential surface of the air storage tank is provided with an air inlet pipe. The two opposite sides of the circumferential surface of the air storage tank are respectively and horizontally provided with a jet pipe and an air exhaust opening. The pneumatic release assembly is arranged between the jet pipe and the air exhaust opening. An electromagnetic valve is arranged at the air exhaust opening. The pneumatic release assembly comprises a cylinder coaxial with the jet pipe. A reset spring is fixed at the bottom of the cylinder and a piston is arranged inside the cylinder. One end of the piston is in ejection type cooperation with the bottom of the cylinder through the reset spring, while the other end of the piston is used for sealing the end port of the jet pipe. The automatic air cannon also comprises an