This absorbent article (10) has: a longitudinal direction (L)； a width direction (W) that is orthogonal to the longitudinal direction； a surface sheet (12) which faces the skin side of a wearer； a rear sheet (20) facing the opposite side from the skin of the wearer； a main body (11) which includes the center in the longitudinal direction； an adhesive portion (50) provided to the non-skin-surface side of the rear sheet in at least the main body； and an extensible portion (70) which can extend further towards the outside than the main body, and which is folded so as to overlap with the main body in the thickness direction. The extensible portion includes at least a region between a first fold line (FL1) where the absorbent article is folded back so the surface sheet faces itself, and a second fold line (FL2) where the absorbent article is folded back so the rear sheet faces itself. The extensible portion and the main body are temporarily joined by a temporary joining portion (60) in the area between the first fold line and the second fold line.吸收性物品(10)係具有：前後方向(L)、與前後方向正交之寬度方向(W)、朝向穿用者的皮膚側之表面薄片(12)、朝向與穿用者的皮膚為相反側之背面薄片(20)、包含前後方向的中心之本體部(11)、設置在至少本體部之背面薄片的非皮膚面側之黏著部(50)、及以與本體部在厚度方向重疊的方式被折疊且可延伸到比本體部更外側之可延伸部(70)。可延伸部是至少包含第1折曲部(FL1)和第2折曲部(FL2)之間的區域，第1折曲部(FL1)是以使表面薄片相對向的方式將吸收性物品返折而構成，第2折曲部(FL2)是以使背面薄片相對向的方式將吸收性物品返折而構成。可延伸部和本體部，是在前述第1折曲部和第2折曲部間的區域藉由暫時固定部(60)進行暫時固定。
