A processing apparatus for processing a sheet member used in manufacturing of an absorbent article includes: 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. 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.
