In an absorbent article having a leak-proof wall, it is possible to prevent a wearer from feeling uncomfortable and to prevent a gap from occurring in a crotch portion. An absorptive body having an absorptive core having a longitudinal direction and a transverse direction intersecting each other, and an elastic member extending and contracting in the longitudinal direction, provided on both sides of the absorptive body in the lateral direction. A pair of leak-proof walls, and the absorbent core has a concave portion in which a central portion in the longitudinal direction is recessed inward in the lateral direction, and the longitudinal direction of the leak-proof walls. In at least a part of the region corresponding to the indented portion, there is a joint portion in which surfaces on one side in the thickness direction of the leak-proof wall are joined, and in the longitudinal direction of the leak-proof wall, At least one of the region on the one end side and the region on the other side of the joint portion has a non-joint portion in which the surfaces on one side in the thickness direction of the leak-proof wall are not joined. [Selection] Figure 1【課題】防漏壁を有する吸収性物品において、着用者に不快感を与えにくくしつつ、股間部に隙間が生じることを抑制する。【解決手段】互いに交差する長手方向と横方向とを有する吸収性コアを備えた吸収性本体と、前記長手方向に伸縮する弾性部材を備え、前記吸収性本体の前記横方向の両側に設けられた一対の防漏壁と、を有し、前記吸収性コアは、前記長手方向の中央部が前記横方向の内側に凹んだ凹み部を有し、前記防漏壁のうちの、前記長手方向において前記凹み部に対応する領域の少なくとも一部に、前記防漏壁の厚さ方向の一方側の面同士が接合された接合部を有し、前記防漏壁のうちの、前記長手方向において前記接合部よりも一端側の領域及び他方側の領域のうち少なくとも一方に、前記防漏壁の厚さ方向の一方側の面同士が接合されていない非接合部を有する。【選択図】図１
