The invention belongs to the field of waste water and waste gas treatment, and particularly relates to a universal waste water and waste gas purification device. The universal waste water and waste gas purification device comprises a water pump, a gas pump, a water collecting pool, a water conveying pipe, an atomization spray head and a low-temperature plasma generator, wherein the low-temperatureplasma generator comprises a low-voltage discharging electrode, a low-voltage discharging electrode medium layer, a high-voltage discharging electrode medium layer, a high-voltage discharging electrode, a power distribution box and a solenoid coil. The water pump and the gas pump are used for mixing the water and gas; the water-gas mixture is injected into the low-temperature plasma generator through an atomization spray head; the water-gas mixture can be obtained by mixing waste water and air or can be obtained by mixing water and waste gas; the goal that the one piece of equipment can be used for both treating waste water and waste gas can be achieved.