Waterpower sand blast perforator and nozzle fixing sleeve thereof

The utility model relates to a waterpower sand blasting perforator and a nozzle fixing sleeve thereof. The waterpower sand blasting perforator comprises a nozzle, the nozzle fixing sleeve and a perforator body with a mounting hole, the nozzle fixing sleeve is mounted in the mounting hole in a screwed mode through outer threads on the outer circumferential face of the nozzle fixing sleeve, an inner hole of the nozzle fixing sleeve is a step hole which comprises a large hole section used for mounting the nozzle and a small hole section correspondingly communicated with a spraying opening of the nozzle, and the small hole section is an inner square hole where the outer square structure of a corresponding spanner is inserted for rotation stopping. The nozzle fixing sleeve is simple in structure and high in universality.