The present invention relates to a floor mop capable of using both sides without bending one's back, and a floor mop which is capable of being fixed by a magnetic force, and which has a rotation structure for fixing selectively both sides of a floor cloth attached to the supporting pad. The rotation structure has a permanent magnet to press and fix the floor cloth by magnetic force. Here, the rotation structure has a triple hinge connection structure which comprises a first rotation zone hinge-combined to a supporting pad, a second rotation zone hinge-combined to the first rotation zone, and a roller hinge-combined to the second rotation zone, thereby the floor mop is capable of rotating more smoothly around the supporting pad.