Abstract: The present utility model relates to a gas air operated with draw back boring toy long-barrelled gun. Its firing module, ammunition box module and trigger module are installed in the main body of the gun, wherein a rifle bolt main body is provided inside the firing module, and there is a connecting rod, a piston module and a rifle bolt gearing component provided inside the rifle bolt main body. Through the trigger module, and the connecting rod, the piston module and the rifle bolt gearing component provided inside the rifle bolt main body, its trigger module produces gas air fire, and makes the firing module produces gas air draw back and automatic loading. It enables the firing module to draw back and loading automatically, and allows the gun to fire continuously.