PURPOSE: A plasma reactor apparatus is provided to generate ozone water and alkali water and acid water with low power consumption. CONSTITUTION: According to the plasma reactor apparatus causing discharge using water or oil or gas as a medium by applying a voltage to two electrodes in a reactor, the first electrodes(3) are formed on a top dielectric layer. The second electrode(7) is formed to face the first electrode on the opposite side. And a reaction catalyzer layer is formed on the second electrode to face the first electrode on the opposite side.
