Abstract: A vacuum cleaner comprising a moisture cleaner device which is easily attached and removed. The moisture cleaner device comprises a frame providing the circulation track of the moisture cleaner; a working roller and a driven roller mounted sideways in the top and lower part of the said frame; a first coupling means for attachment and removal of the lower part of the moisture cleaner to the vacuum suction head section; a second coupling means for attachment and removal of the top part of the moisture cleaner to a connecting pipe; and a moisture cleaner mounted to the surface of the frame. Because the peripheral surface of the working roller is uneven, when the vacuum suction head portion is moved back and forth, the working roller and driven roller are rotated, the moisture cleaner thus being operative such that the moisture cleaner contacts the floor as the normal vacuum suction cleaning proceeds.