The utility model provides a nailing machine. Nailing machine (10) include: hit driver blade (19) of nailing (20), casing (11) that can support driver blade (19) with moving, make driver blade (19) move to electric motor (22) of top dead center from the bottom dead centre, install in the chain drive section of casing (11), handle (13) that set up with casing (11) continuously, set up continuously and accomodate motor casing (14) of electric motor (22) with casing (11), install in casket box (15) of chain drive section, reach battery (33) to electric motor (22) supply power, making casket box (15) install aslope for handle (13), and making casket box (15) and battery (33) overlapping, electric motor (22) and battery (33) dispose to the opposite lateral deviation of casket box (15) for one side of handle (13) configuration with moving. The utility model discloses can restrain and maximize on handle width direction.