Abstract: A fastener tool includes a shell, a holder, a striker and a separating structure. The shell is configured to place a compression chamber with gas storage and a cylinder body with a piston inside, and to fix the holder. The holder supports a driving wheel driven by a motor, and provided with a nailing base of which a front end is provided with a gun nozzle, so as to form a nailing passage extending to the gun nozzle from the cylinder body. The striker is provided with a first end and a second end and in driving meshing with the driving wheel. The first end is connected to the piston, and the second end extends to the nailing passage along the gun nozzle direction, so as to move back and forth between a compression limiting position and a nailing limiting position.