Abstract: An upright vacuum cleaner having a suction inlet body for cleaning a floor with rotation of the agitator including the brush assembled by the rubber belt at a motor shaft, a main body rotatively installed with a filter for collecting dust and the like sucked through the suction inlet body by the suction force of the driving means, a handle member disposed at an upper portion of the main body for pushing and dragging around, and a suction hose installed at the main body for sucking dust with suction force of the driving means to be utilized by being inserted into the suction inlet body and to be stored by placing on the handle member, wherein the mobile means comprises: a rotating shaft supported at an inner hole of a body composing of the main body being assembled in mobility and being protruded out of the outer hole with serration formed at both ends thereof; and a pair of rear wheels in a predetermined shape inserted along with the serration of the rotating shaft and inserted though the outer hole of the bo