An ion generator is disclosed. The ion generator has improved portability and ion generation efficiency. As is apparent from the above description, the ion generator according to the present invention is configured so that the discharge unit is constituted by the felts, and the piezoelectric element, not the coil type transformer, is used in the high voltage generation unit which generates high voltage. Consequently, the present invention has the effect of improving portability of the ion generator and the present invention has the effect of improving ion generation efficiency although the portability of the ion generator is improved by configuring the ion generator according to the present invention so that the discharge unit is constituted by the felts, and the piezoelectric element, not the coil type transformer, is used in the high voltage generation unit which generates high voltage.