A processing apparatus that processes a sheet memberused in manufacturing an absorbent article, in which theprocessing apparatus includes (A) a mounting member on whichthe sheet member is mounted, (B) a rotating roller that rotateswith a peripheral surface thereof opposing the mounting member,(C) a processing component that is provided on the peripheralsurface and movable on the peripheral surface along an axialdirection of the rotating roller, and (D) an adjustmentmechanism that adjusts a relative position of the processingcomponent with respect to the peripheral surface in the axialdirection, (E) the processing component processing the sheetmember by coming into contact with the sheet member with therotating roller being rotated, while the sheet member ispassing between the mounting member and the rotating rollerwith the sheet member being mounted on the mounting member, (F)the adjustment mechanism adjusting the relative position bymoving the processing component on the peripheral surface alongthe axial direction.