A method for manufacturing an underpants-type wearable article that includes: a front side waist member disposed on a belly side of a body; a back side waist member disposed on a back side of the body; and an absorbing body disposed at a clotch portion of the body, both side portions of the front side waist member and the back side waist member being joined to each other by side joining using a pair of side joining portions, the method comprising: an elastic stretchable member sandwiching step of sandwiching a plurality of elastic stretchable members stretched in a predetermined stretching direction between a pair of sheets; a front side continuous body forming step, performed after the elastic stretchable member sandwiching step, of forming a continuous body of the front side waist members by intermittently joining, in the stretching direction, the pair of sheets and the elastic stretchable members in a stretched state; a back side continuous body forming step, performed after the elastic stretchable member sandwiching step, of forming a continuous body of the back side waist members by intermittently joining, in the stretching direction, the pair of sheets and the elastic stretchable members in a stretched state; a side joining step of intermittently joining the front side waist members and the back side waist members by the side joining portions in boundary regions which become boundaries of individual wearable articles in a state where the continuous body of the front side waist members and the continuous body of the back side waist members are overlapped with each other; an elastic stretchable member cutting step of cutting the elastic stretchable members of the continuous body of the front side waist members and the elastic stretchable members of the continuous body of the back side waist member in the individual boundary regions in the continuous body of the front side waist members and the continuous body of the back side waist members without cutting the sheets; a joining state inspection step, performed after the elastic stretchable member cutting step, of inspecting a joining state of the elastic stretchable members to the pair of sheets; and a continuous body cutting step, performed after the joining state inspection step of obtaining individual wearable articles by cutting the continuous body of the front side waist members and the continuous body of the back side waist members at the boundary regions. an elastic stretchable member sandwiching step of sandwiching a plurality of elastic stretchable members stretched in a predetermined stretching direction between a pair of sheets; a front side continuous body forming step, performed after the elastic stretchable member sandwiching step, of forming a continuous body of the front side waist members by intermittently joining, in the stretching direction, the pair of sheets and the elastic stretchable members in a stretched state; a back side continuous body forming step, performed after the elastic stretchable member sandwiching step, of forming a continuous body of the back side waist members by intermittently joining, in the stretching direction, the pair of sheets and the elastic stretchable members in a stretched state; a side joining step of intermittently joining the front side waist members and the back side waist members by the side joining portions in boundary regions which become boundaries of individual wearable articles in a state where the continuous body of the front side waist members and the continuous body of the back side waist members are overlapped with each other; an elastic stretchable member cutting step of cutting the elastic stretchable members of the continuous body of the front side waist members and the elastic stretchable members of the continuous body of the back side waist member in the individual boundary regions in the continuous body of the front side waist members and the continuous body of the back side waist members without cutting the sheets; a joining state inspection step, performed after the elastic stretchable member cutting step, of inspecting a joining state of the elastic stretchable members to the pair of sheets; and a continuous body cutting step, performed after the joining state inspection step of obtaining individual wearable articles by cutting the continuous body of the front side waist members and the continuous body of the back side waist members at the boundary regions.