Dust collecting apparatus and vacuum cleaner having same

The present invention provides a dust collecting apparatus and a vacuum cleaner having same, the dust collecting apparatus comprising: a primary cyclone unit which is formed so as to separate dust from the air flowed in from the outside; and a secondary cyclone unit comprising a set of axial cyclones for separating fine dust from the air flowing in in the axial direction. The set comprises: casings forming outer walls of the periphery of each of hollow portions; and a fine dust separating member disposed above the casings and for forming, with the casings, the axial cyclones. The fine dust separating member comprises: vortex finders disposed on the inner side of each of the casings; band parts formed away from each vortex finder so as to surround the outer peripheral side of each vortex finder and having a shape which corresponds to the casings so as to be mounted on the casings and form, with the casings, the outer wall of each of the axial cyclones; and guide vanes disposed between the vortex finders and band parts, connected to the vortex finders and band parts and extending along a spiral direction.