Cavitation jet ammunition crushing system and use method

The invention discloses a cavitation jet ammunition crushing system which comprises a central control platform (7), a liquid supply device (3), a hydraulic pipeline and an ammunition crushing device (1). The liquid supply device (3) is connected with the ammunition crushing device (1) through a hydraulic pipeline, and the fluid power supercharging device (2) is arranged on the hydraulic pipeline; the ammunition crushing device (1) comprises a rack, a liquid storage box (11), a clamping mechanism and a cavitation crushing mechanism, wherein the clamping mechanism and the cavitation crushing mechanism are arranged on the two sides. The clamping mechanism comprises a driving air cylinder (8), and a first sealing assembly (9) is arranged at the end, corresponding to a piston rod of the driving air cylinder (8), of the workpiece. A second sealing assembly is arranged at the part combined with the liquid storage box (11); a through hole is formed in the second sealing assembly, and liquid in the liquid storage box