The invention discloses a gas pulse vehicle cleaning device and belongs to the technical field of automatic vehicle cleaning devices. The gas pulse vehicle cleaning device mainly comprises a nozzle, a detonation pulse tank, an igniter, a mixing tank, check valves, a gas solenoid valve, a flame arrester, a gas hand valve, a compression air hand valve, a compression air solenoid valve and a compression air check valve. Combustible gas and air are mixed in a certain ratio, mixed air enters the detonation pulse tank, the igniter lights the fire on the mixed tank to form high-speed flame so as to ignite the mixed air in the detonation pulse tank, and the high-speed flame forms pulse when passing through the nozzle so as to remove dust on the surface of the automobile.