The method for producing an absorbent article stably folds protrusion sections together with side section regions without increasing the burden of operation during use. The method for producing an absorbent article comprises: a providing step of providing a semi-processed continuous body comprising semi-processed products for the absorbent article connected in a machine direction, the semi-processed product comprising a pair of protrusion sections formed protruding outward in the widthwise direction and an expandable-and-shrinkable member expandable and shrinkable in the widthwise direction and disposed in a expanded state； a shrinking step of shrinking the expandable-and-shrinkable member (11) to reduce a length in the widthwise direction of the semi-processed product (1b) and form a plurality of wrinkles (11S) in the expandable-and-shrinkable member； a pressing step of pressing a center region MA in the widthwise direction of the semi-processed product while transporting the semi-processed continuous body in the machine direction, and a folding step of folding a pair of side section regions (PA, PA) in the widthwise direction of the semi-processed product upward in the center region at the pair of folding lines (FL1, FL2) extending along the machine direction while transporting the semi-processed continuous body in the machine direction.
