The pulse double-fluid water fog extinguishing gun is one fast and efficient fire extinguishing set belonging to the field of public safety emergency aid equipment. It includes a sprayer, a sprayer casing, a spraying pipe, an inner core, a gun body, a middle shaft, a sealing ring, a bearing, an air inlet pipe, an airflow switch, a rotary valve, a retaining block, a water inlet pipe, a water flow switch, a back seat, a connecting block, a fixing nut, a spring, a button switch, a retainer ring, an air inlet hole, a water inlet hole and a notch. The pulse double-fluid water fog extinguishing gun has great extinguishing impact force, high pulse effect, small water fog particle, low water flow loss, high fire controlling power and high extinguishing effect. It is suitable for extinguishing fire of solid, oil and electric equipment.