It is known that both positive and negative corona discharge are accompanied with Ionic Wind (IW) in air at atmospheric pressure. Ions are accelerated toward the collecting electrode by the electric field and collide with many neutral molecules. As the result, the neutral molecules dragging by ions move toward the collecting electrode, too. IW is caused such a way and its velocity is almost equal to gas velocity in the Electrostatic Precipitator (EP). Then, Mini-Cylindrical EP, utlizing IW for the purpose of dust collection positively, was produced by way of experiment. Authors call this apparatus Mini-Cylindrical EP so that the scale of this EP is about one tenth as large as an industrial EP. In this paper it is described that Mini-Cylindrical EP is useful for cleaning air from the results of experiments.