An absorbent body is formed of an inner absorbent body located on the body side and an outer absorbent body located on the opposite body side, and when the upper absorbent body absorbs excretion fluid and swells, the opposite body side Provides an absorber that improves the fluid permeability by providing an opening in the most recessed part, and improves the diffusibility of the part of the outer absorbent body that faces the opening to prevent leakage of excretory fluid to the outside. To do. SOLUTION: The inner absorbent body absorbs a liquid-permeable first front sheet, a liquid-permeable first back sheet, and excretory fluid provided between the first front sheet and the first back sheet. The first front side sheet and the first back side sheet are formed with the conductive polymer particles, and the first joining portion extending in the front-rear direction with a predetermined interval in the width direction, and the predetermined interval in the front-rear direction in plan view. The absorbent polymer particles are bonded to each other by a second bonding portion that extends in the width direction and is separated from the first bonding portion, the first bonding portion adjacent to the first bonding portion, the second bonding portion, and the second bonding. This is solved by forming an interior in a cell defined by a second junction adjacent to the portion and forming an opening at the intersection where the first junction and the second junction intersect. [Selection] Figure 5【課題】、吸収体を、身体側に位置する内側吸収体と、反身体側に位置する外側吸収体で形成し、上側吸収体が、排泄液を吸収して膨潤した場合に、反身体側に最も窪む部位に開口部を設けて通液性を向上させ、外側吸収体における開口部に対向する部位の拡散性を向上させて排泄液の外部への漏れ出しを防止した吸収体を提供する。【解決手段】内側吸収体を、液透過性の第１表側シートと、液透過性の第１裏側シートと、第１表側シートと第１裏側シートの間に設けられた排泄液を吸収する吸収性ポリマー粒子で形成し、平面視において、第１表側シートと第１裏側シートを、幅方向に所定の間隔を隔てて前後方向に延在する第１接合部と、前後方向に所定の間隔を隔てて幅方向に延在する第２接合部で接合し、吸収性ポリマー粒子を、第１接合部と、第１接合部に隣接する第１接合部と、第２接合部と、第２接合部に隣接する第２接合部で区画されるセルに内装し、第１接合部と第２接合部が交差する交差部に、開口部を形成することにより解決される。【選択図】図５
