PROBLEM TO BE SOLVED: To provide a disposable diaper in which outer edge parts of extensible panels have flexibility and an elastic member constituting the extensible panel has excellent fixing stability.SOLUTION: The extensible panels 6 each includes, in a body width direction Y: an extensible portion 6B that is constituted of a panel material 61, and a plurality of elastic members 62 fixed to the panel material 61 and extending in the body width direction Y and that has elasticity in the body width direction Y and a non-extensible portion having no elasticity in the body width direction Y. The outer edge part 6A of the extensible panel 6 includes the non-extensible portion. The plurality of elastic members 62 are disposed in a body longitudinal direction X at predetermined intervals apart, are fixed to the panel material 61 at the extensible portion 6B in an extended state, and extend from the extensible portion 6B towards the non-extensible portion (the outer edge part 6A). In the non-extensible portion, the elastic member 62 and the panel material 61 are not joined.【課題】伸縮パネルの外側縁部が柔軟性を有し、且つ伸縮パネルを構成する弾性部材の固定安定性に優れた使い捨ておむつを提供すること。【解決手段】伸縮パネル6は、パネル材61と、パネル材61に固定され且つ本体幅方向Yに延びる複数本の弾性部材62とを含んで構成され、且つ本体幅方向Yに伸縮性を有する伸縮部6Bと、本体幅方向Yに伸縮性を有さない非伸縮部とを本体幅方向Yに有している。伸縮パネル6の外側縁部6Aが該非伸縮部を含んでいる。複数本の弾性部材62は、本体長手方向Xに所定間隔を置いて配置され、伸縮部6Bでパネル材61に伸張状態で固定され且つ伸縮部6Bから前記非伸縮部(外側縁部6A)に延出しており、該非伸縮部では弾性部材62とパネル材61とが接合されていない。【選択図】図6
