Automatic compensation damping shock absorber

The utility model relates to an automatic compensation damping shock absorber, including director, oil storage jar, working cylinder, piston rod, piston valve block subassembly and base valve block subassembly, the lower end?of the?piston rod center has a long blind hole, has a fluid through -hole and long blind hole intercommunication on the piston rod lateral wall, still include a rotational pin axle and a thermostat metal, the rotational pin position of axle is in long blind hole, and the center of rotational pin axle has a fluid passageway, has a compensation hole on the lateral wall rather than the intercommunication, thermostat metal be helical structure, one end is fixed at the rotational pin epaxially, the other end is fixed on piston valve block subassembly. When the fluid temperature variation, the damping force can be according to the motion situation of piston, and the automatic gain is adjusted, makes the nature controlled of vehicle and travelling comfort more reasonable to this simple structure