Pneumatic nail gun

The utility model relates to a pneumatic nail gun. The nail gun comprises a gun body, a nail box and a forming gun nozzle, the forming gun nozzle comprises an inner end cover and an outer end cover, the inner end cover is provided with an inner nail groove from top to bottom, the outer end cover is provided with an outer nail groove from top to bottom, the lower section of the inner nail groove and the lower section of the outer nail groove are each provided with a deformation section enabling a nail to deform and bend, and the inner end cover and the outer end cover are installed together in an attached mode. The inner nail groove and the outer nail groove are arranged in parallel, the nail outlet of the nail box can simultaneously push out two nails, the outer nail is positioned above the outer nail groove, the inner nail is positioned above the inner nail groove, the nail hammer can simultaneously strike the two nails, the two sub-nails respectively slide from bottom to top along the outer nail groove and