The invention discloses an impact device for remodeling a pneumatic control type component. The impact device comprises a main shell. According to the impact device, compressed air is adopted as powerneeded during driving, and the characteristics that a driving medium is convenient to take, and use cost is avoided are achieved. Meanwhile, the device can effectively control the pressure of the high-pressure air for driving, and therefore the highest speed of air exhausting is determined, the impact strength is controlled, and the effect is high. The device is provided with a rotary longitudinal height adjusting mechanism of a reverse thread structure, the longitudinal height of a stamping component can be adjusted, and therefore the component can beat the surface of equipment of the same height, and the beating strength is further controlled. In addition, the device is provided with a spiral spring abutting type highest pressure intensity difference control mechanism, the maximum valueof internal air pressure can be controlled, and therefore the internal air pressure is controlled, and the phenomenon that the beating strength is too large due to the fact that the air pressure is too large is avoided.