PROBLEM TO BE SOLVED: To provide a disposable pants-type diaper capable of being easily worn.SOLUTION: A leg periphery flap 42 of an inseam panel 14 of a disposable pants-type diaper 10 has an outside area 91 and an inside area 92. At a lowermost end 70 of an inseam area 4, each of the outside and inside areas 91 and 92 has at least a length of 10 mm in a width direction X； the inside area 92 is elongated in a vertical direction Y； and the outside area 91 is elongated in a horizontal direction X from the inside area 92.【課題】 着用させることが容易な使い捨てのパンツ型おむつの提供。【解決手段】 使い捨てのパンツ型おむつ１０の股下パネル１４における脚回りフラップ４２が外側域９１と内側域９２とを有する。股下域４の最下端部７０において、外側域９１と内側域９２とのそれぞれは、幅方向Ｘに少なくとも１０ｍｍを有するとともに、内側域９２が縦方向Ｙに延びる一方、外側域９１が内側域９２から横方向Ｘへ延びる。【選択図】図１
