NOVELTY - Water electrolysis device comprises electrolysis unit, water tank, gas-liquid mixer, gas-liquid separator, and power supply. The electrolysis unit comprises shell with top portion provided with water inlet having opening set in turn from top to bottom with transversely set anode titanium power supply pore plate, beta-lead oxide ( beta -PbO2) anode catalytic plate, polymer electrolyte membrane, platinum/carbon cathode (Pt/C) catalytic plate, cathode titanium power supply pore plate, and cathode water collecting groove.    USE - Water electrolysis device.    ADVANTAGE - The water electrolysis device can decompose water into ozone, ozone water, hydrogen and hydrogen-containing water. It has simple structure, small energy consumption, and low cost.    DETAILED DESCRIPTION - Water electrolysis device comprises electrolysis unit, water tank, gas-liquid mixer, gas-liquid separator, and power supply. The electrolysis unit comprises shell with top portion provided with water inlet having opening set in turn from top to bottom with transversely set anode titanium power supply pore plate, beta-lead oxide ( beta -PbO2) anode catalytic plate, polymer electrolyte membrane, platinum/carbon cathode (Pt/C) catalytic plate, cathode titanium power supply pore plate, and cathode water collecting groove. The beta -PbO2 anode catalytic plate and Pt/C cathode catalytic plate are pressed integrally from beta -PbO2 anode catalytic electrode and porous titanium plate, Pt/C cathode catalytic electrode and porous titanium plate. The anode titanium power supply pore plate, beta -PbO2 anode catalytic plate, polymer electrolyte membrane, Pt/C cathode catalytic plate, cathode titanium power supply pore plate, cathode water collecting groove are tightly integrated as electrolytic module by fastening bolt. The cathode water collecting groove is provided with hydrogen water discharge pipe. The water tank has bottom provided with engaging joint connected with water outlet of shell, and top provided with ozone discharging pipe and water replenishing opening. The box body of water tank is provided with ozone water outlet. The gas-liquid mixer comprises mixing container for mixing ozone and water. The mixing container is provided with ozone inlet, water inlet, and water outlet. The ozone inlet is connected with ozone outlet of water tank. The water inlet is connected with external water source. The gas-liquid separator comprises separator vessel separating hydrogen and water. The separator vessel is provided with hydrogen water inlet, water outlet, and hydrogen discharge pipe. The hydrogen water inlet is connected with hydrogen water outlet of electrolysis cell. The anode of power supply is connected with anode titanium power supply pore plate, while cathode is connected with cathode titanium power supply pore plate. The water tank is provided with top cover, ozone discharging pipe, and water inlet. The ozone discharging pipe is further equipped with ozone, ozone decomposer, and ozone leakage protection valve. The top cover of water tank is further provided with liquid level meter and temperature sensor. The ozone inlet gas-liquid mixer and water inlet are respectively provided with nozzle. The hydrogen discharge pipe is further provided with hydrogen inlet and hydrogen leakage protection valve. The power supply is provided with concentration adjusting module, overload protection module, over-heat protection module, and abnormal protection module. The electrolysis unit and water tank are connected by screw.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of water electrolysis device.