The invention relates to a fastener beating tool, and belongs to the technical field of electric tools. The tool comprises an energy storage mechanism formed by a shell inner cylinder and a piston, wherein the piston is connected with a firing pin extending to a gun nozzle; a grab handle is arranged on one side of the cylinder; a nail box is arranged on one side of the gun nozzle; a lifting mechanism is arranged between the grab handle and the nail box, and contains the firing pin with engaging teeth distributed at intervals, and a drive wheel with engaging cylinders distributed at intervals in the circumferential direction; the drive wheel is in transmission connection with a motor; poke-blocking fingers extend out from the radial directions at the opposite sides of reserved arc lengths of the driving wheel; advancing convex pins engaged with the poke-blocking fingers are arranged on the side surface, opposite to the engaging teeth, of the firing pin; the poke-blocking fingers are rotated to the engaging and poke-blocking positions in front of the advancing convex pins before the engaging cylinders enter to be engaged with the engaging teeth in a lifting way; and the poke-blocking fingers are rotated to poke the advancing convex pins so as to enable the engaging teeth to be located at the positions engaged with the engaging cylinders when the engaging cylinders enter to be engaged with the engaging teeth in a lifting way. The fastener beating tool provided by the invention is simple in structure and effectively prevents the drive wheel from being engaged again in a lifting way to be in engagement interference with the firing pin.