The utility model relates to an automatic-filling shotgun capable of continuous emission, solving the existing insufficiency of the traditional shotguns which need manual filling. The automatic-filling shotgun is composed of a barrel 1, a magazine 2, a semiautomatic transmitter 3, a butt 4 and a bolt 5, wherein, the barrel 1 is provided with a recoil spring; the spring cartridge of the magazine 2 is replaceable; the butt 4 is included with a bolt recoil spring; the bolt 5 can automatically revolve to block, unlock, eject, and counter-recoil to eject for chambering. The automatic-filling shotgun has the technical performances of automatic safety, automatic filling, continuous shooting single bullet and free gun on-hook. Additionally, the utility model can continuous emit in the state of no breaking boresight, can furthest display the effective firepower of the shotgun, and can improve the hit ratio.