PURPOSE: An air cleaner is provided to prevent dust from flowing into an exhausting vent by installing a discharge cover on the outside of the exhausting vent. CONSTITUTION: An air cleaner comprises the following: a body(1) including a flow-path in the inside; an exhausting vent(5) and an inhaling vent included in the body; an air blowing device installed on the flow path; a discharge cover(10) guiding the flow of air exhausted from the exhausting vent while being located on the exterior of the exhausting vent to partially cover the exhausting vent. The discharge cover includes a lower plate(11), and an upper plate(12) located on the upper side of the lower plate.
