To provide a method for manufacturing disposable lower body garments which is superior in stretchability, water absorbability, comfortable to wear, and can simplify the manufacturing process and suppress the manufacturing cost.[MEANS FOR SOLVING PROBLEMS] A method of manufacturing a disposable lower body garment, wherein at least a first long nonwoven fabric and an elastic member are prepared as raw materials for the disposable lower body garment, and the prepared raw material is extended in a conveying direction At least one side surface of an elastic member having stretchability in the conveying direction is bonded to one side surface of the first long nonwoven fabric extended in the raw material extending step, A composite sheet forming step of forming a composite sheet provided with an elastic member bonding region on one side surface of the first long nonwoven fabric a step of forming a composite sheet having elastic member joining regions on the elastic member joining region of the composite sheet formed in the composite sheet forming step , And a leg hole hole forming step of providing a through hole for the leg hole at predetermined intervals in the carrying direction to form the leg hole.[課題]伸長性,吸水性,着心地に優れ、製造工程を簡素化して製造コストを抑制することのできる使い捨て下半身用衣料の製造方法を提供すること。[解決手段]使い捨て下半身用衣料の製造方法であって、前記使い捨て下半身用衣料の原材料として、第1の長尺不織布と弾性部材とを少なくとも用意し、前記用意された原材料を、搬送方向に延出させる原材料延出工程と、前記原材料延出工程で延出された前記第1の長尺不織布の一方側面に、少なくとも前記搬送方向に対して伸縮性を有する弾性部材の一方側面を接合し、前記第1の長尺不織布の一方側面に、弾性部材接合領域が設けられた複合シートを形成する複合シート形成工程と、前記複合シート形成工程で形成された前記複合シートの弾性部材接合領域に対し、前記搬送方向に所定間隔毎に脚部穴用の貫通穴を設け、前記脚部穴を形成する脚部穴形成工程と、を少なくとも有する。
