The present invention addresses the problem of simplifying the production of a stretch structure that comprises an elastic member. The present invention addresses said problem by means of a stretch structure that comprises an elastic member (19) that is provided between a first sheet layer (12S) and a second sheet layer (12H), wherein, from one stretch-direction end of the stretch structure to the other, there are at least three alternating stretch regions (22) and non-stretch regions (21), and there is a stretch region (22) at both stretch-direction ends. Both stretch-direction end parts of the stretch regions (22) have a hot-melt adhesive (71) adhesion region at which the elastic member (19) has been adhered to the first sheet layer (12S) and the second sheet layer (12H). In an expanded state, the intervals (71d) between adhesion regions that are adjacent in the stretch direction are all the same, and the stretch-direction lengths (71w) of the adhesion regions that are positioned at non-stretch region (21) side end parts of the stretch regions (22) are all twice the stretch-direction length (71w) of the adhesion regions that are positioned at either stretch-direction end part of the stretch structure.本發明所要解決的問題在於提供一種拋棄式穿著用物品的伸縮結構及其形成方法，其使基於彈性構件之伸縮結構的製造變得容易。 為了解決此問題，本發明的拋棄式穿著用物品的伸縮結構，其具備被設置在第一片層12S與第二片層12H之間的彈性構件19，其中，自伸縮結構的伸縮方向的一端直到另一端，伸縮區域22和非伸縮區域21交互地重複3個區域以上，且伸縮方向的兩端成為伸縮區域22，在伸縮區域22的伸縮方向上的兩端部，具有彈性構件19被黏合至第一片層12S和第二片層12H而成之熱熔黏合劑71的黏合區域，在展開狀態下，於伸縮方向上相鄰的黏合區域的間隔71d全部相同，並且，位於伸縮結構的伸縮方向上的兩端部之黏合區域的伸縮方向長度71w的2倍、與位於伸縮區域22中的非伸縮區域21側的端部之黏合區域的伸縮方向長度71w全部相同。
