NOVELTY - Hydrogen and oxygen producing machine filter water fog and hydrogen-oxygen automatic replenishing water system, comprises an automatic water supply system mainly comprising automatic water supply device, where the water tank is connected with hydrogen and oxygen producing machine. An automatic water replenishing device is connected to water tank and hydrogen and oxygen producing machine, the upper end of hydrogen and oxygen producing machine is set with an air outlet. The air outlet is connected with an air outlet connector. The air outlet connector is connected with air outlet tube.    USE - Used as a hydrogen and oxygen producing machine filter water fog and hydrogen-oxygen automatic replenishing water system.    ADVANTAGE - The system provides hydrogen-oxygen gas as alternative energy source, and improves the safety and practicability of the motor vehicle.    DETAILED DESCRIPTION - Hydrogen and oxygen producing machine filter water fog and hydrogen-oxygen automatic replenishing water system, comprises an automatic water supply system mainly comprising automatic water supply device, where the water tank is connected with hydrogen and oxygen producing machine. An automatic water replenishing device is connected to water tank and hydrogen and oxygen producing machine, the upper end of hydrogen and oxygen producing machine is set with an air outlet. The air outlet is connected with an air outlet connector. The air outlet connector is connected with the air outlet tube at one end, and the automatic water replenishing device side end or the bottom of flume through the bottom is set with air inlet. The air inlet is connected with an air inlet connector. The air inlet connector other end is connected with the air outlet tube so that the automatic water replenishing device is connected with the hydrogen and oxygen producing machine. The hydrogen and oxygen producing machine inner part is set with an electrode group for electrolysis, the hydrogen containing gas mist is subjected for upward flow of the liquid water in the automatic replenishment water tank. The water liquid in the water tank is subjected for filtering, so that the mist containing hydrogen gas is passed into water liquid. The automatic water replenishing device and water tank aqueous solution and impurities of hydrogen-gas are filtered.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the hydrogen and oxygen producing machine filter water fog and hydrogen-oxygen automatic replenishing water system.