JQ-JY type mechanical hydraulic shock absorber is a new type of double-acting shock absorber, which absorbs the runout and vibration of the drilling tool through two damping elastic elements: compressed energy storage of disc spring and silicone oil, which has the advantages of good maintainability, high load resistance and high service life. It can adapt to the needs of different formations, provide the best protection for drill bits and drilling tools, and also provide high-temperature products (180°C) according to user needs.