PROBLEM TO BE SOLVED: To provide a disposable pants-type diaper capable of making a trunk-part elastic member less noticeable by favorably forming pleats extending in a diaper longitudinal direction on a waist part in the disposable pants-type diaper provided with the trunk-part elastic member.SOLUTION: The disposable pants-type diaper comprises a trunk-part elastic member 13 extending in a diaper width direction x on a waist part of an outer wrapper member 2. The outer wrapper member 2 includes an inner sheet 7, an outer sheet 9 and, an intermediate sheet 8 disposed therebetween. The trunk-part elastic member 13 is disposed between the inner sheet 7 and the intermediate sheet 8, and the outer sheet 9 and the intermediate sheet 8 are mutually joined at the waist part by a plurality of joining parts 11 provided in the diaper width direction x. The inner sheet 7, the intermediate sheet 8, and the outer sheet 9 are an embossed nonwoven fabric with embossed parts respectively, where the dimension of the embossed parts of the outer sheet 9 is larger than the embossed parts of the inner sheet 7 and the intermediate sheet 8.COPYRIGHT: (C)2015,JPO&INPIT【課題】胴部弾性部材が設けられた使い捨てパンツ型おむつであって、胴周り部におむつ長手方向に延びる襞が好適に形成され、胴部弾性部材を目立たなくさせることができる使い捨てパンツ型おむつを提供する。【解決手段】外装部材2の胴周り部におむつ幅方向xに延在する胴部弾性部材13を有する使い捨てパンツ型おむつであって、外装部材2は、内側シート7と外側シート9とこれらの間に配された中間シート8を有し、胴部弾性部材13は内側シート7と中間シート8との間に配され、外側シート9と中間シート8は、胴周り部において、おむつ幅方向xに複数設けられた接合部11で互いに接合され、内側シート7と中間シート8と外側シート9はそれぞれエンボス部を有するエンボス加工不織布であり、外側シート9のエンボス部の大きさが、内側シート7と中間シート8のエンボス部の大きさよりも大きい。【選択図】図4