A processing apparatus for processing a sheet member used in manufacturing of an absorbent article, comprising: a rotating roller that rotates with both ends thereof in an axial direction being supported; a sheet-placing portion having a sheet-placing surface on which the sheet member is placed; and a processing portion and a protuberance that are included on a peripheral surface of the rotating roller, wherein the sheet member is processed by being pinched between the sheet-placing surface and the processing portion, the processing portion is located at a side where one end of the rotating roller is positioned with respect to a center of the rotating roller in the axial direction of the rotating roller, the protuberance is located at an other side where an other end of the rotating roller is positioned with respect to the center in the axial direction, the protuberance abuts the sheet-placing surface when the sheet member is pinched between the processing portion and the sheet-placing surface while the rotating roller is rotating, characterized in that the processing apparatus further comprises another protuberance that is disposed on the peripheral surface and is located closer to the side in the axial direction than the processing portion is to the side, while the sheet member is being pinched between the processing portion and the sheet-placing surface, the protuberance is in contact with the sheet-placing surface on the other side closer to the other end in the axial direction than the sheet member is to the other end, and the other protuberance abuts the sheet-placing surface on the side closer to the one end in the axial direction than the sheet member is to the one end, a distance from the protuberance to the center in the axial direction of the rotating roller is longer than a distance from the processing portion to the center in the axial direction and is longer than a distance from the other protuberance to the center in the axial direction. a rotating roller that rotates with both ends thereof in an axial direction being supported; a sheet-placing portion having a sheet-placing surface on which the sheet member is placed; and a processing portion and a protuberance that are included on a peripheral surface of the rotating roller, wherein the sheet member is processed by being pinched between the sheet-placing surface and the processing portion, the processing portion is located at a side where one end of the rotating roller is positioned with respect to a center of the rotating roller in the axial direction of the rotating roller, the protuberance is located at an other side where an other end of the rotating roller is positioned with respect to the center in the axial direction, the protuberance abuts the sheet-placing surface when the sheet member is pinched between the processing portion and the sheet-placing surface while the rotating roller is rotating, characterized in that the processing apparatus further comprises another protuberance that is disposed on the peripheral surface and is located closer to the side in the axial direction than the processing portion is to the side, while the sheet member is being pinched between the processing portion and the sheet-placing surface, the protuberance is in contact with the sheet-placing surface on the other side closer to the other end in the axial direction than the sheet member is to the other end, and the other protuberance abuts the sheet-placing surface on the side closer to the one end in the axial direction than the sheet member is to the one end, a distance from the protuberance to the center in the axial direction of the rotating roller is longer than a distance from the processing portion to the center in the axial direction and is longer than a distance from the other protuberance to the center in the axial direction.