A power handpiece for orthopaedic drilling and sawing at least includes a handle housing (1), a clamping assembly (4) for clamping a cutting tool assembly, a power motor (2) for outputting power and driving the cutting tool assembly to perform drilling and sawing operations, and a switch assembly (5) for controlling power output of the power motor (2), wherein the power motor (2) is connected to an external power source. The external power source can utilize a large-scale accumulator or city electricity, thereby avoiding the situation of power failure or low power which is prone to occur in the operation, and ensuring the smooth performance of the operation, reducing the quantity of heat of the handle, and reducing the overall mass of the device. The power handpiece for orthopaedic drilling and sawing is convenient and flexible to operate, and can improve the efficiency of the operation.
