VACUUM CLEANER

A cleaner is disclosed. The cleaner includes: a housing (1) having an introduction opening (8) through which air is introduced; a filtering unit (30) mounted in an inner space (S1) of the housing (1), and defining a dust collection space between the filtering unit and an inner surface (20) of the housing (1); and a cleaning unit (110) mounted to surround the filtering unit (30), and raising and lowering inside the dust collection space by operating in cooperation with a manipulation unit (150), at least a portion of the cleaning unit at an initial position thereof being connected to an air introduction path extending from the introduction opening (8) such that the cleaning unit has a guide flow path (E) guiding a flow of introduced air.