Disclosed is a vacuum cleaner including a suction nozzle; a dust collecting assembly which includes a dust collecting container having a dust collecting space and an opened bottom, an inlet, a filtering device provided in the dust collecting container, and an outlet; and a cleaner body which includes a dust collecting assembly receiving recess for detachably receiving the dust collecting assembly, a polluted air outlet provided at the dust collecting assembly receiving recess and communicating with the inlet of the dust collecting assembly, a clean air inlet provided on an inner wall of the dust collecting assembly receiving recess to face the dust collecting assembly and communicating with the outlet of the dust collecting assembly, and a clean air conduit having a fan provided therein, for exhausting the clean air to the outside of the vacuum cleaner.