A washing machine rinse water purification device and washing apparatus including the washing machine rinse water purification device. The washing machine rinse water purification device includes a first liquid supplier, a processing tub, a buffer tub and a washing tub. In the first liquid supplier, a first liquid introduced from an introduction portion into a processing tub is swirled from an introduction portion to a discharge portion to generate a swirling flow, plasma is generated in a gas phase to produce a reforming component, the produced reforming component is dissolved in the first liquid and is dispersed in the first liquid to produce a reforming liquid, the produced reforming liquid temporarily passes through a buffer tub from a discharge portion and then is supplied into a washing tub as a second liquid.
