A manufacturing method of an underpants-type absorbent article, which is provided with an outer body provided with a front piece and back piece mutually joined at side areas, the outer body having elastic members provided discontinuously along portions of the lower edges of the front piece and back piece that define leg holes, in which the outer body is provided with a connecting sheet which extends in the front-to-rear direction in a crotch area and mutually connects the front piece and the back piece, and an inner body containing an absorptive body and which is anchored to the outer body so as to be positioned in a crotch area, comprising, in turn: a step in which a continuous body of a sheet that forms the front piece or the back piece in the form of a sheet web is transported in a machine direction, wherein continuous bodies of sheets that respectively form the front piece and the back piece in the form of two sheet webs are respectively transported along the machine direction while maintaining a spacing area in the cross-machined direction, a step in which a continuous body of an elastic member in the form of a continuous elastic body is supplied to the sheet web while oscillating in a cross-machine direction perpendicular to the machine direction so that the continuous elastic body is alternately positioned on the sheet web and outside the sheet web, and the portions of the continuous elastic body positioned on the sheet web are attached to the sheet web, a step in which portions of the continuous elastic body positioned outside the sheet web are held by a holder, a cutting step in which the portions of the continuous elastic body outside the sheet web are cut and removed a step in which the two sheet webs are transferred onto a suction transfer roller, and then the connecting sheet is attached to the two sheet webs, positioned on the suction transfer roller, so as to straddle the spacing area and form a continuous body of the outer body in the form of an outer body web, wherein the connecting sheet overlaps a part of the elastic members, an edge forming step in which the outer body web is cut to form edges that define leg openings and to position at least a portion of both side edges of the connecting sheet farther to the inside in the transverse direction than both side edges of the inner body, and an inner body attachment step in which the inner body is attached to the outer body web after the edge forming step. a step in which a continuous body of a sheet that forms the front piece or the back piece in the form of a sheet web is transported in a machine direction, wherein continuous bodies of sheets that respectively form the front piece and the back piece in the form of two sheet webs are respectively transported along the machine direction while maintaining a spacing area in the cross-machined direction, a step in which a continuous body of an elastic member in the form of a continuous elastic body is supplied to the sheet web while oscillating in a cross-machine direction perpendicular to the machine direction so that the continuous elastic body is alternately positioned on the sheet web and outside the sheet web, and the portions of the continuous elastic body positioned on the sheet web are attached to the sheet web, a step in which portions of the continuous elastic body positioned outside the sheet web are held by a holder, a cutting step in which the portions of the continuous elastic body outside the sheet web are cut and removed a step in which the two sheet webs are transferred onto a suction transfer roller, and then the connecting sheet is attached to the two sheet webs, positioned on the suction transfer roller, so as to straddle the spacing area and form a continuous body of the outer body in the form of an outer body web, wherein the connecting sheet overlaps a part of the elastic members, an edge forming step in which the outer body web is cut to form edges that define leg openings and to position at least a portion of both side edges of the connecting sheet farther to the inside in the transverse direction than both side edges of the inner body, and an inner body attachment step in which the inner body is attached to the outer body web after the edge forming step.