PROBLEM TO BE SOLVED: To provide a disposable diaper which is excellent in stretching properties, flexibility and cushioning properties in the vicinity of a waist opening, and can be easily manufactured.SOLUTION: The disposable diaper 1A includes: a waist stretchable portion 68 formed between layers of at least two sheet materials (an outer sheet 16b and a folded portion 24 thereof) which constitute a front body 2 or rear body 6, by continuously fixing a waist stretchable material 42 in its extended state along a waist edge 2c, 6c of the front side 2 or rear side 6 internal cushion-forming sheets 60, 61 formed of nonwoven fabric sheets and intermittently bonded to the sheet material (folded portion 24) constituting a skin contact surface of the waist stretchable portion 68 in a regular pattern so as to cover the skin contact surface and external cushion-forming sheets 62, 63 formed of nonwoven fabric sheets and intermittently bonded to the sheet material (outer sheet 16b) constituting the outermost surface of the waist stretchable portion 68 in a regular pattern so as to cover the outermost surface.
