As for this invention in regard to the device for sterilizing and refinement the medium which includes the liquid, the vapor or solid phase, or those blends, as for the aforementioned device: In order the central electrode (1), the induced electricity layer which it adjoins in the aforementioned electrode (1) (2,20), the aforementioned induced electricity layer the first territory which it adjoins in (2) (3,30), and the second territory which it adjoins to expedient and the aforementioned first territory which introduce first medium in the aforementioned first territory (5,50), and while expedient and the aforementioned first medium which introduce second medium in the aforementioned second territory exist inside the first territory, to make the plasma inside aforementioned first medium by impressing voltage between the aforementioned first electrode (1) and the second electrode,Expedient, because second medium it is mixed, the second territory (5) expedient in order to fill the aforementioned plasma in, it includes. In addition as for this invention, it regards the method of being executed with the device of this invention.< Selective figure > Figure 1本発明は液体、気体もしくは固体相、またはそれらの混合物を含む媒体の殺菌及び精製のための装置に関し、前記装置は:中心電極(1)、前記電極(1)に隣接した誘電層(2,20)、前記誘電層(2)に隣接した第一領域(3,30)、及び前記第一領域中に第一媒体を導入する手段、前記第一領域に隣接した第二領域(5,50)、及び前記第二領域中に第二媒体を導入する手段、前記第一媒体が第一領域内に存在している間に、前記第一電極(1)と第二電極の間に電圧を印加することにより、前記第一媒体内にプラズマを作るための手段、第二媒体と混合されるために、第二領域(5)中に前記プラズマを注入するための手段、を含む。本発明はまた、本発明の装置で実施される方法に関する。【選択図】 図1