Absorber is used to suppress the shock when the spring absorbs shock and bounces back and the impact from the road surface. It is widely used in automobiles to accelerate the attenuation of frame and body vibrations to improve the driving smoothness of automobiles. When passing through uneven roads, although the shock spring can filter the vibration of the road surface, the spring itself will have reciprocating motion, and the shock absorber is used to suppress this spring jump.