A disposable diaper, comprising: a front waistline region; a rear waistline region; a crotch region positioned between the front waistline region and the rear waistline region; an absorber running across the crotch region and extending in the front waistline region and the rear waistline region; a pair of fastening tapes extending from the rear waistline region to the outer side in the product widthwise direction, and being secured to the front waistline region; a product longitudinal direction from the front waistline region towards the rear waistline region; a product widthwise direction that is perpendicular to the product longitudinal direction; a pair of leg hole openings being formed; a leg stretch unit arranged around the leg hole openings and can expand and contract along at least the product longitudinal direction; and a leg side stretch unit arranged at the inner side in the product widthwise direction from the leg stretch unit, and having a contracted unit that can expand and contract along the product longitudinal direction, wherein: the absorber includes a first region extending from an end at the side of the rear waistline region of the absorber towards a side of the crotch region, and a second region arranged adjacent to the first region, at the side of the crotch region from the first region; characterised in that a plurality of compressed units, where the absorber is compressed in the product thickness direction, are formed intermittently in the first region; the second region has a lower bending rigidity than the first region; a crotch stretch unit, formed in an absorber-arranged region in which the absorber is arranged, is provided in the crotch region and can expand and contract in the product longitudinal direction; the end at the side of the crotch region of the first region is arranged at the side of the rear waistline region from the crotch stretch unit; and the end at the side of the rear waistline region of the leg stretch unit and the end at the side of the rear waistline region of the contracted unit in the leg side stretch unit are arranged at the side of the crotch region from the end at the rear waistline region side of the first region, and are also arranged at the side of the rear waistline region from the end at the crotch region side of the first region. a front waistline region; a rear waistline region; a crotch region positioned between the front waistline region and the rear waistline region; an absorber running across the crotch region and extending in the front waistline region and the rear waistline region; a pair of fastening tapes extending from the rear waistline region to the outer side in the product widthwise direction, and being secured to the front waistline region; a product longitudinal direction from the front waistline region towards the rear waistline region; a product widthwise direction that is perpendicular to the product longitudinal direction; a pair of leg hole openings being formed; a leg stretch unit arranged around the leg hole openings and can expand and contract along at least the product longitudinal direction; and a leg side stretch unit arranged at the inner side in the product widthwise direction from the leg stretch unit, and having a contracted unit that can expand and contract along the product longitudinal direction, the absorber includes a first region extending from an end at the side of the rear waistline region of the absorber towards a side of the crotch region, and a second region arranged adjacent to the first region, at the side of the crotch region from the first region; characterised in that a plurality of compressed units, where the absorber is compressed in the product thickness direction, are formed intermittently in the first region; the second region has a lower bending rigidity than the first region; a crotch stretch unit, formed in an absorber-arranged region in which the absorber is arranged, is provided in the crotch region and can expand and contract in the product longitudinal direction; the end at the side of the crotch region of the first region is arranged at the side of the rear waistline region from the crotch stretch unit; and the end at the side of the rear waistline region of the leg stretch unit and the end at the side of the rear waistline region of the contracted unit in the leg side stretch unit are arranged at the side of the crotch region from the end at the rear waistline region side of the first region, and are also arranged at the side of the rear waistline region from the end at the crotch region side of the first region.