To provide a disposable diaper capable of suppressing leakage from a girth without impairing adhesiveness with the skin.SOLUTION: An outer casing 12 includes an upper region 12U and a lower region 12D. The upper region 12U includes an upper elastic member 15U. The lower region 12D includes a lower elastic member 15D. The upper region 12U includes a sheet , An inner elastic portion 27 located inside the absorbent main body 16, an outer seat portion 26 located outside the absorbent main body 16 and opposed to the inner elastic portion 27 , And the lower region 12D is constituted by sandwiching the lower elastic member 15D with a sheet and includes an outer elastic portion 28 located outside the absorbent main body 16. The inner elastic portion 27 is non-The outer elastic portion 28 is adhered to the adherend portion 16A, and the outer edge portion 16A is adhered to the outer sheet portion 26 in a concave shape with the open end facing the crotch portion.(FIG.【課題】肌との密着性を損なうことなく、胴回りからの漏れを抑制することを可能とした使い捨ておむつを提供する。【解決手段】外装体12は、上部領域12Uと下部領域12Dとを備え、上部領域12Uは、上部弾性部材15Uを備え、下部領域12Dは、下部弾性部材15Dを備え、上部領域12Uは、シートで上部弾性部材15Uを挟み込んで構成し、吸収性本体16より内側に位置する内側弾性部27と、吸収性本体16外側であって、内側弾性部27と対向して位置する外側シート部26とを備え、下部領域12Dは、シートで下部弾性部材15Dを挟み込んで構成され、吸収性本体16より外側に位置する外側弾性部28を備え、内側弾性部27は、被接着部16Aに対して非接着とし、外側シート部26に対して被接着部16Aの周囲を、開口端を股下部に向けて凹状に接着し、外側弾性部28は、被接着部16Aに対して接着されている。【選択図】図2
