The invention relates to a cleaning device, in particular to a surgical instrument cleaning device. The disinfection operation of a surgical instrument can be automatically completed; the workload ofmedical personnel can be reduced; the device can continuously perform cleaning. One end of a connecting plate is fixedly connected with the lower end of a through hole through welding; the other end of the connecting plate is arranged in a fan-shaped groove; a disinfection liquid groove is arranged inside a box body; the lower end of the disinfection liquid groove is provided with a pipe; the pipeand a round hole are in clearance fit; one end of a lamp frame is fixedly connected with the interior of the box body through welding; a lamp shade is arranged on the lamp frame; an ultraviolet lampis arranged inside the lamp shade; a main body of a disinfection case I arranged on a disinfection device I is arranged at the upper end of a slide plate; slide rods are arranged at the two sides of the main body of the disinfection case I; one end of the conveying plate is fixed to the outer end of an annular baffle plate; the conveying plate is arranged at the lower end of a groove formed in theannular baffle plate; the other end of the conveying plate is arranged at the upper end of the disinfection device I; the support frame is fixedly connected with the lower ends of a cylinder and thebox body through welding.