The rising gather of a disposable diaper includes: a main unit portion having a first portion extending from both sides of an inner member toward the center in the width direction and a second portion extending outward in the width direction. Front and back fallen portions are formed by fixing front and back end portions in the main unit portion to the inner member. The front and back fallen portions have a protruding portion in which the second portion protrudes 5 to 40 mm outward in the width direction than a side edge of the first portion. The protruding portion of the front fallen portion has a protruding fixing portion fixed to the front outer member overlapping with a back surface side thereof. The protruding portion of the back fallen portion has a protruding fixing portion fixed to the back outer member overlapping with a back surface side thereof.
