The invention discloses a process and device for disposing wastewater adopting low temperature plasma technology, wastewater is pumped into water distributing machine and sent into a water distributing plate by a water pump, wherein the upper portion and the lower portion of the water distributing plate are respectively provided with a high-pressure stage and an earth electrode, a silex glass plate is mounted between the water distributing plate and the high-pressure stage, leading the silex glass plate to form a medium to resist discharge, use O3, H2O2, OH, H, O, high-energy electrons and ultraviolet light which produce in the process that the medium resists discharge, and pollutants in wastewater which flows on the water distributing plate to make reaction, thereby achieving the target of removing pollutants. The method is capable of proceeding in normal temperature and pressure, reaction condition with strong steerability is moderate, device and operation of the reaction are simpler, the active materials like high-energy electrons, O3, H2O2 and OH, H, O which produce in the reaction process react with pollutants in wastewater without choice, and degrades pollutants into carbon dioxide, water and simple organic matter.