The absorbent body (40) of this disposable diaper (10) is provided with: a first region from the end of the absorbent body at the front waist-encircling region towards a back waist-encircling region； and a second region that has a lower bending rigidity than the first region and that is disposed neighboring the first region to the back waist-encirlcing region side of the first region. The boundary between the first region and second region is configured in a manner so as: to be disposed at the front waist-encircling region side of the end at the front waist-encircling region side of leg expanding/contracting sections； and to be disposed at the groin region side of the end at the groin region side of a target section.
