Disclosed is a robot-assisted ultrasonic osteotome powered system (20), comprising an ultrasonic osteotome powered system (10), a robot-assisted surgical system and a controller, wherein the osteotome powered system (10) comprises an ultrasonic transducer for converting electrical energy into mechanical energy and an ultrasonic osteotome (11) for delivering the mechanical energy to a bone； the robot-assisted surgical system comprises a base (21) and a robot arm (22) mounted to the base, the ultrasonic osteotome powered system is detachably connected to a movable end of the robot arm, and the robot arm is used to control the position of, the spatial angle of, and a force applied by a cutting end of the ultrasonic osteotome powered system to the bone to be cut； and the controller is communicatively connected to the ultrasonic osteotome powered system, for controlling a cutting power of the ultrasonic osteotome powered system, wherein the controller controls the output power of the ultrasonic osteotome powered system based on the remaining cutting thickness and the density of the bone, the type of an adjacent tissue, etc. The robot-assisted ultrasonic osteotome powered system of the present invention improves the safety and accuracy of systems for orthopedic surgery, particularly minimally invasive orthopedic surgery.
