PROBLEM TO BE SOLVED: To provide a disposable diaper in which the wearing feeling of the disposable diaper to an inner thigh and an abdomen is improved.SOLUTION: A disposable diaper includes: an outer sheet having a longitudinal direction and a horizontal direction intersecting the longitudinal direction, including a crotch part positioned between a front body part, a back body part, a front body part and the back body part, having the crotch part bonded with the front body part, and having the crotch part bonded with the back body part; and an absorbing body provided over the back body part from the front body part and absorbing excrement. The disposable diaper is characterized in that a front body side edge in the horizontal direction of the front body part is bonded with a back body side edge in the horizontal direction of the back body part, an inseam leg gather is provided in the crotch part, the inseam leg gather is not bonded with the absorbing body, and the bonding part between the front body part and the crotch part is positioned in the crotch part side from the end of the crotch part side of the front body side edge in the longitudinal direction.SELECTED DRAWING: Figure 5【課題】内腿や腹部に対しての使い捨ておむつの着用感を向上させることにある。【解決手段】 縦方向と、前記縦方向と交差する横方向と、を有し、前身頃部、後身頃部、前記前身頃部と前記後身頃部との間に位置する股下部を備え、前記前身頃部と前記股下部とが接合され、前記後身頃部と前記股下部とが接合されている外層シートと、前記前身頃部から前記後身頃部に亘って設けられ、排泄物を吸収する吸収性本体と、を備え、前記前身頃部の前記横方向における前身頃側縁と前記後身頃部の前記横方向における後身頃側縁が接合されている使い捨ておむつであって、前記股下部には、股下レッグギャザーが設けられ、前記股下レッグギャザーは、前記吸収性本体とは接合されておらず、前記前身頃部と前記股下部との接合部は、前記縦方向において、前記前身頃側縁の前記股下部側の端よりも前記股下部側に位置することを特徴とする。【選択図】図5