An object of the present invention is to impart stretchability to at least a part of an absorbent body without impairing the wearing comfort of the absorbent article. A method of manufacturing an absorbent article while transporting an absorbent body in a transport direction, the step of attaching an elastic member CS2 to a partial region of the absorbent body P1, and a method of manufacturing the absorbent body P2. A cut forming process for forming a cut in a part of the region, a region where the stretchable member is pasted, and a region where the cut is formed overlap at least partly on one surface of the absorber P3. And a step of sandwiching the absorber between the back sheet and the top sheet so that the non-permeable back sheet faces and the liquid permeable top sheet faces the other surface of the absorber. [Selection] Figure 4【課題】吸収性物品の装着快適性を損なうことなく、吸収体の少なくとも一部に伸縮性を付与する。【解決手段】吸収体を搬送方向に搬送しながら吸収性物品を製造する方法であって、吸収体P1の一部の領域に伸縮性部材CS2を貼り付ける貼り付け工程と、前記吸収体P2の一部の領域に切れ目を形成する切れ目形成工程と、前記伸縮性部材が貼り付けられた領域と前記切れ目が形成された領域とが少なくとも一部で重なり合った前記吸収体P3の一方の面に液非透過性の裏面シートが対面し、前記吸収体の他方の面に液透過性の表面シートが対面するように、前記裏面シートと前記表面シートとで前記吸収体を挟む工程と、を備える。【選択図】図4