Vacuum cleaner

A vacuum cleaner is disclosed, by which dust collecting performance can be enhanced while a flow resistance of air is reduced. The present invention includes a cleaner body (100) having a body inlet and a body outlet (610) wherein an air sucked by an intake nozzle (200) is introduced via the body inlet to be discharged outside via the body outlet (610), a primary cyclone (311) having a first inlet (311a) communicating with the body inlet and a first outlet (311b) to separate particles from the introduced air, 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 first connecting tube (410) connecting the first inlet (311a) and the body inlet together, a dust storing part (330) storing dust separated by the primary cyclone (311) and the at least one secondary cyclone (313), and a blade filter (315) having a plurality of main blades (315c) arranged at a prescribed angle each and a support member (315a) supporting a plurality of the main blades (315c), the blade filter (315) provided within the primary cyclone (311) to filter the air within the primary cyclone (311).