PROBLEM TO BE SOLVED: To provide a stretchable sheet in which a stretchable sheet member and another sheet member are joined, which causes a positional deviation between a joining portion to which an elastic member is attached in the stretchable sheet member and a joining portion to join another sheet member. Make it harder. SOLUTION: A first sheet portion (11), a second sheet portion (12) and a third sheet portion (13) are laminated, and between the first sheet portion (11) and the second sheet portion (12). A method for producing a stretchable sheet (10) having a rubber thread (15) arranged on a first sheet portion (10) and a second sheet portion at a first position in the outer peripheral direction of the anvil roll (110). (10) is joined to each other, and a first joining portion forming step of forming a plurality of first joining portions (51) that regulates the position of the rubber thread (15) in the direction of expansion and contraction； and the anvil roll (110). Forming a plurality of second joint portions (52) for joining the first sheet portion (11), the second sheet portion (22), and the third sheet portion (13) to each other at the second position in the outer peripheral direction. 2 joining part formation process. [Selection diagram] Fig. 3【課題】伸縮性シート部材と他のシート部材とが接合された伸縮性シートにおいて、伸縮性シート部材において弾性部材を取り付ける接合部と、他のシート部材を接合する接合部との位置ずれを生じにくくする。【解決手段】第１シート部（１１）と第２シート部（１２）と第３シート部（１３）とが積層され、第１シート部（１１）と第２シート部（１２）との間に糸ゴム（１５）が配された伸縮性シート（１０）の製造方法であって、アンビルロール（１１０）の外周方向の第１位置にて、第１シート部（１０）と第２シート部（１０）とを互いに接合し、かつ、糸ゴム（１５）の伸縮方向の位置を規制する複数の第１接合部（５１）を形成する第１接合部形成工程と、アンビルロール（１１０）の外周方向の第２位置にて、第１シート部（１１）と第２シート部（２２）と第３シート部（１３）とを互いに接合する複数の第２接合部（５２）を形成する第２接合部形成工程と、を有する。【選択図】図３
