Disclosed is a vacuum cleaner including a suction nozzle; a dust collecting assembly including a dust collecting container having an opened top surface, a top lid for opening and closing the top of the dust collecting container, an inlet, a filtering device provided in the dust collecting container, a separation plate for preventing the impurities collected in a lower part of the dust collecting container from being risen by air flow, and an outlet for discharging clean air; and a cleaner body including a dust collecting assembly receiving recess for detachably receiving the dust collecting assembly, a polluted air outlet coupled with the inlet of the dust collecting assembly, and a clean air inlet provided on an inner wall of the dust collecting assembly receiving recess, so as to face the direction of mounting the dust collecting assembly, and communicating with the outlet of the dust collecting assembly, and a clean air conduit having a fan provided therein and discharging the clean air to the outside of the vacuum cleaner.