Vacuum cleaner

A vacuum cleaner is disclosed, by which a dust collecting device (330) is facilitated to use. The present invention includes a cleaner body (100), a cyclone chamber (310) having a primary cyclone (311) separating particles from an introduced air and at least one secondary cyclone (313) provided outside the primary cyclone (311) to re-separate particles contained in the air discharged from the primary cyclone (311), a dust collecting container (330) detachably assembled to the cleaner body (100), the dust collecting container (330) including a primary dust storing part (331) storing dust separated by the primary cyclone (311) and a secondary dust storing part (333) storing dust separated by the at least one secondary cyclone (313), and a fixing means (500) for assembling/dissembling the dust collecting container (330) and the cyclone chamber (310).