PROBLEM TO BE SOLVED: To provide a method for manufacturing an underpants-type absorbent article, capable of efficiently stably manufacturing at a low cost, the underpants-type absorbent article effectively preventing leakage from a vertical end part of an absorbent body.SOLUTION: This method for manufacturing an underpants-type absorbent article includes: an original fabric sheet cutting step of making a cut on one belt-like original fabric sheet 10A in traveling along the traveling direction MD thereof followed by cutting into an exterior body constituting sheet 11 constituting an exterior body, and a covering body constituting sheet 12 constituting a covering body； and a body connecting step of connecting each of the sheets 11 and 12 cut in the original fabric sheet cutting step with an absorbent body 2.【課題】吸収性本体の縦方向端部からの漏れが効果的に防止されたパンツ型吸収性物品を低コストで効率良く安定的に製造し得るパンツ型吸収性物品の製造方法を提供すること。【解決手段】本発明のパンツ型吸収性物品の製造方法は、走行中の１枚の帯状の原反シート１０Ａにその走行方向ＭＤに沿って切れ目を入れ、外装体を構成する外装体構成シート１１と、被覆体を構成する被覆体構成シート１２とに切り分ける原反シート切断工程と、前記原反シート切断工程で切り分けられた各シート１１，１２を吸収性本体２と接合する本体接合工程とを有する。【選択図】図５
