A two-fluid fine water mist high-efficiency fire extinguishing device, comprising an equipment base, a fine water mist nozzle connected to the equipment base, a water supply pipe connected to the fine water mist nozzle, a pump set connected to the water supply pipe, a pump set connected to the pump set A water storage tank, an air supply device connected to the fine water mist nozzle, the gas supply device includes an air storage tank, a pressure pump connected to the air storage tank, an air outlet head connected to the fine water mist nozzle, an air outlet head and a pressure pump The connecting pipe between them, the air outlet head includes a fixed base, a rotating base and a rotating motor for driving the rotating base to rotate, the fixed base is fixedly connected to the fine water mist nozzle, the fixed base, the rotating base The seat and the fine water mist nozzle are coaxially arranged, the top of the fixed base is provided with an air inlet, one end of the connecting pipe is fixedly connected to the air inlet, the rotating base is provided with an air outlet, and the rotating base A sealing ring is provided between the seat and the fixed base, and both the rotating base and the fixed base are hollowed out.