Abstract: A dust removal device capable of normally dedusting a surface of a sheet-shaped object having an edge portion of a shape with protruding parts continuously arranged at predetermined intervals along the longitudinal direction, that is, a dust removal device discharging a gas to a surface of a sheet-shaped object 100 from a discharge outlet while drawing in the gas above the surface of the sheet-shaped object 100 through a suction inlet, the discharge outlet including a first discharge outlet 30 for discharging the gas to portions of the sheet-shaped object 100 other than the edge portion and a second discharge outlet 35 for discharging the gas to the edge portion 100b of the sheet-shaped object 10, and the suction inlet including a first suction inlet (31, 32) for drawing in the gas above the surface of the portions of the sheet-shaped object 100 other than the edge portion 100b and a second suction inlet (33, 34) for drawing in the gas of the surface of the edge portion 100b of the sheet-shaped object 100.