A ventral side portion disposed on the ventral side of the wearer when worn, and a back side which is disposed on the back side of the wearer, the absorbent article having a crotch portion that is disposed crotch of the wearer , it said at the crotch portion in a state in which the two-fold has been the belly side and said back side has been superimposed, each end of the lateral direction of the belly side and said back side is the absorbent article in by being fused respectively corresponding parts at different positions in the longitudinal direction crossing the lateral direction, in the absorbent article of pants type in which the waist opening and pair of leg around an opening is formed is there. The respective end portions, when divided into a plurality of portions in each of the longitudinal direction, the laminated number of sheets forming the ventral side and the back sides, a first portion of said plurality of portions, and a second part which is located next to the longitudinal direction of the first part, is different from only one piece to each other. Extending said longitudinally along edges in a plurality of portions, the welded portion and the stomach portion and said back portion is formed by fusing, continuously linearized along said edge and it extends.装着時に着用者の腹側に配される腹側部と、前記着用者の背側に配される背側部と、前記着用者の股間に配される股下部とを有した吸収性物品が、前記股下部にて二つ折りされて前記腹側部と前記背側部とが重ね合わせられた状態で、前記腹側部と前記背側部とが前記吸収性物品の横方向の各端部に相当する部分でそれぞれ融着されていることにより、前記横方向と交差する縦方向において互いに異なる位置に、胴回り開口部と一対の脚回り開口部とが形成されたパンツ型の吸収性物品である。前記各端部を、それぞれ前記縦方向に複数の部分に区分した場合に、前記腹側部及び前記背側部を形成するシートの積層枚数が、前記複数の部分のうちの第1部分と、該第1部分の前記縦方向の隣に位置する第2部分とで、互いに一枚だけ相違している。前記複数の部分において前記縦方向に沿った縁部には、前記腹側部と前記背側部とが融着されてなる融着部が、前記縁部に沿った線状に連続して延在している。
