The invention discloses electrode for generating negative oxygen ion andnegative oxygen ion generator using the electrode, comprising a wire loop withalongitudinal section shaped U, a circle of fibre bundle filled inside of the U-shapedgroove in the wire loop, wherein the fibre bundle and wire loop are tightlyglued byconducting resin and the said wire loop is composed of micrometer-size carbonfiberor fullerene fiber. The invention improves the productivity of negative oxygenionsand greatly reduces the generation of Ozone molecules. Besides, by utilizingthestrong turning air flow to transfer the generated negative oxygen ions in highconcentration to the space of a long distance for human to breathe, itimproves theuse efficiency of negative oxygen ions without the filter net, simplifies thestructure ofnegative oxygen ion generator in this invention, as well as decreases itssize.