To provide a moving method of a window wiping robot capable of carrying out sure cleaning easily without labor to an aged person and to solve defects of conventional technology where the conventional technology is expensive and weight is heavy.

Belts (or chains) 2 move on an elliptical guide 3. Three suction pads 1 are attached to the belts (or chains) 2. The belts (or chains) 2 are provided at right and left two places. Thus, the suction pads 1 are six. The suction pads 1 are sucked to one place of a windowpane at a section lowered to the lower side of the elliptical orbit of the belts (or chains) 2. As the suction pads 1 move while sucking the windowpane when passing a lower part in this elliptical orbit, a window wiping robot body advances. Since the suction pads 1 move together with the belts (or chains) 2 of the elliptical orbit, a window wiping robot moves.