Impulse-type underground supercharged jet drilling method and device

An impulse-type underground supercharged jet drilling method, the method comprising using up and down vibrations of a drill string or weight on bit variation during a drilling process, so that an upper joint connected to the drill string drives a housing and a supercharging cylinder block disposed therein to move up and down relative to a supercharging piston, and the supercharging piston, a high pressure line connected thereto, and a drive shaft disposed outside the high pressure line make a reciprocally retractable movement relative to the housing, as a result, some working fluid entering the supercharging cylinder block is intermittently supercharged, and discharged from a high pressure fluid passage disposed in the supercharging piston and the high pressure line, the discharged high pressure working fluid forms a high pressure jet through a nozzle, and other working fluid enters a drill bit through a normal pressure fluid passage between the housing, the supercharging cylinder block, and the high pressure line, the drive shaft, thereby forming a normal pressure jet.