The present invention relates to an impulse valve structure which can prevent the pressure drop within the impulse valve and the vibration of a spool when inert gases are supplied alternately. The impulse valve structure comprises: a hollow body (210) having a first and a second gas inlets (211, 212) and a gas outlet (213); a spool (220) inserted into the inside of the hollow body (210) to partition a first and a second gas chambers (261, 262) and to alternately discharge the inert gases by means of straight reciprocal movement; a plurality of plunger guides (240) connected on the opposite ends peripheral surfaces of the hollow body (210) for securing a stopper (230); and a first and a second solenoids (251, 252) disposed on the peripheral surfaces of the plunger guide (240) for providing the magnetic force enabling the straight reciprocal movement of the spool (220).