The invention discloses a bone drill for a medical robot, belongs to the field of medical treatment and solves the problem of applying bone drills in medical operating robots. The bone drill comprises a drill bit, a base (1) and a driving end (2), the drill bit comprises a rotating rod (301) and a drilling rod (309) connected with a rotating seat (304), the base comprises a motor cavity and a driving cavity, a motor (101) is arranged in the motor cavity, drives a second gear (302) of the driving end and is controlled remotely, the driving end (2) is used for being mounted in the driving cavity and positioned at the tail end of the rotating rod, a first gear (301) fixedly connected with the rotating rod and the second gear (302) meshed with the first gear are arranged in the driving end, and the second gear is fixedly connected with a rotating shaft (203).