To provide a moving device usable even in a place, difficult to move by a device using a conventional wheel or a crawler, like soft ground such as a gravel path, a sandy place, or farm land, and moreover such as a different level place or a stair in a road and a building, etc.

Leg parts 2a and 2b, fitted with grounding plates 1a and 1b, having a tread adptable for a moving surface, so as to be slidable before and behind, are arranged elastically into a frame 3, to move a decice by the alternate movement before and behind of the plates 1a and 1b, and the stepping-like vertical movement of the leg parts 2a and 2b.