To provide a disposable diaper which is less likely to cause skin troubles due to sweat, and in which a sweat-absorbing sheet is hardly turned up when worn.SOLUTION: A disposable diaper 1 of the present invention comprises an absorbent body 2 including an absorber 23 and a surface sheet 21. The diaper 1 comprises a waist part, and the waist part is divided into an abdominal side part F and a back side part R. The back side part R comprises, as constituent sheets, a hydrophobic sheet 31E covering a back side end 2R of the absorbent body 2, and a sweat absorbent sheet 10 disposed on a skin-facing surface side of the hydrophobic sheet 31E. In a region Q where the sweat absorbent sheet 10 and the absorbent body 2 overlap in a thickness direction, the bond strength of a first bonding region 7U bonding the sweat absorbent sheet 10 and the hydrophobic sheet 31E is larger than the bond strength of a second bonding region 7D bonding the hydrophobic sheet 31E and the surface sheet 21.SELECTED DRAWING: Figure 5【課題】着用中に吸汗シートがめくれ難く、汗に起因する肌トラブルが生じ難い使い捨ておむつを提供すること。【解決手段】本発明の使い捨ておむつ１は、吸収体２３と表面シート２１と含む吸収性本体２を備える。おむつ１は、胴周り部を具備し、該胴周り部は腹側部Ｆと背側部Ｒとに区分される。背側部Ｒは、構成するシートとして、吸収性本体２の背側端部２Ｒを覆う疎水性シート３１Ｅと、疎水性シート３１Ｅの肌対向面側に配される吸汗シート１０とを備える。吸汗シート１０と吸収性本体２とが厚み方向で重なる領域Ｑにおいて、吸汗シート１０と疎水性シート３１Ｅとを接合している第１接合領域７Ｕの接合強度が、疎水性シート３１Ｅと表面シート２１とを接合している第２接合領域７Ｄの接合強度よりも大きい。【選択図】図５
