Disclosed is an air purifier. The air purifier according to the present invention discharges air after filtering fine dust included in moving air and sterilizing bacteria from the air, during a step of feeding indoor air in a lower side thereof and moving and discharging the air to an upper side thereof. The air purifier comprises: a housing including a bottom plate seated on a bottom thereof, a body upwardly stood on the bottom plate to have a path formed therein to vertically connect a feeding hole in a lower surface and a discharging hole in an upper surface, and a cover coupled with the rear surface of the body to open and close the path a filtering member installed in a lower region of the path of the body, and filtering foreign material including fine dust a suctioning fan installed in the path to be disposed in an upper side of the filtering member, forcibly feeding external air through the feeding hole, and discharging the air through the discharging hole and an ultraviolet lamp passing through the filtering member by the suctioning fan, and sterilizing air moving to the discharging hole by irradiating ultraviolet rays to the air. According to the present invention, the air purifier can be produced in a small size, thereby being conveniently moved and used. The air purifier not only can remove fine foreign material including dust but also can sterilize bacteria included in passing air and discharge purified air and anions. Moreover, an upper path in the air purifier is lengthily formed in a vertical direction, and an ultraviolet lamp is installed in the upper path, so air forcibly fed through a feeding hole is exposed to a large quantity of ultraviolet rays generated from the ultraviolet lamp while being moved and discharged along the upper path lengthily formed in a vertical direction. Accordingly, a sterilizing effect can be improved.COPYRIGHT KIPO 2016공기 청정기가 개시된다. 본 발명의 공기 청정기는, 실내 공기를 하부로 유입시킨 후 상부로 이동시켜 배출하는 과정에서 이동하는 공기에 포함된 미세먼지를 여과하고 세균을 살균한 후 배출시키도
