PROBLEM TO BE SOLVED: To provide a disposable diaper capable of following the bulge around the wearer's waist fluctuating according to the wearer's posture.SOLUTION: A pair of right and left belly-side stretchable sheets which are stretchable in a width direction are provided to bridge between end parts on an abdominal side of a back sheet and an exterior sheet and an end flap part on an abdominal side. A pair of right and left fastening tapes are provided on both sides of a back part of the exterior sheet. A pair of right and left target sheets mutually separate for engaging the fastening tapes are provided on a ventral part of the exterior sheet. The fastening tapes are provided to be inclined at a prescribed intersection angle against a virtual line extending in a width direction. The target sheets are provided to be inclined at a prescribed intersection angle against a virtual line extending in a width direction. In a planar view, the fastening tapes and the target sheets are provided in parallel.SELECTED DRAWING: Figure 2
