Under different conditions,the impact energy and frequency produced by gas impact will produce different working effects,reasonable matching of impact frequency and related influencing factors will generate different peak pulses.This kind of spike pulse can produce a larger impact energy than ordinary shock,and it can be used to treat deep vein thrombosis and other diseases.Therefore,a gas shock system based on spike pulse was proposed.In the system,the gas impact formed by the instantaneous release of gas in the process of intermittent inflation and deflation was mainly used to produce the peak pulse to act on different parts of patients to break the small thrombus,to achieve the purposes of prevention and treatment.By analyzing the working principle of the system and the generation process of peak pulse,the mathematical model of gas shock was established;the pressure distribution curve of gas shock was calculated through simulation,and the influences of different related parameters on the generation process of peak pulse were analyzed.The prototype of gas impact system was tested and debugged.The actual pressure curve was obtained through relevant software control interface,and the best experimental data for producing peak pulse were given.