It has been clarified that great turbulence in the nozzle hole, due to cavitation phenomena, contributes greatly to the disintegration of the liquid jet. When cavitation occurs in the nozzle hole, the atomization of the liquid jet is enhanced considerably. On the basis of the result, this article presents a method for obtaining an excellent spray under lour injection pressure, using the disturbance of the liquid flow caused by cavitation. The results of the present study indicate enhancement of the atomization of the liquid jet is possible by simply installing a wire net over the inlet of the nozzle hole and making a gap at the nozzle hole.