Firearm capable of carrying out periscopic shooting

The invention relates to a firearm capable of carrying out periscopic shooting, which is formed by a gun body, a periscope, a linkage box and a gun support, wherein the linkage box is movably connected at the lower end of the gun body, the lower end of the linkage box is fixedly connected with the gun support, the periscope is arranged at the rear end of the linkage box; the inner part of the linkage box is provided with a pulley, a linkage trigger and a cord pull, wherein the pulley is fixed in the linkage box and on the same level with a gun trigger, the linkage trigger is hinged in the linkage box, and the gun trigger is connected with the linkage trigger by the cord pull rounding the pulley. With the adoption of the firearm, the effective hiding is realized, and the solider casualty rate is reduced.