A pants-type wearing article having a circumferential direction, a front-back direction and a vertical direction orthogonal to the front-back direction, the pants-type wearing article comprising a front waist region and a rear waist region opposed to each other in the front-back direction and respectively having lateral regions (8, 9) opposed to each other in the circumferential direction along which the front waist region and the rear waist region are connected together, wherein: the lateral region of the front waist region and the lateral region of the rear waist region are connected to each other by the intermediary of a sheet-like connecting member along at least one of both sides in the circumferential direction; the connecting member has its outer surface facing outward of the wearing article and is folded to form mountain folds (41, 42, 43) convexly pointing outward of the wearing article and extending in the vertical direction and valley folds (51, 52, 53) convexly pointing inward of the wearing article and extending in the vertical direction so that the mountain folds (41, 42, 43) and the valley folds (51, 52, 53) may alternate in the circumferential direction and may be expanded in the circumferential direction from the folded state as the connecting member is pulled in the circumferential direction; and the outer surface. of the connecting member is attached to the inner surface (48, 49) of the front and rear waist regions (2, 3); the connecting member is formed of sheet material which is folded in a zigzag manner with an edge pointing inwardly of the wearing article to define a plurality of layers, and a first layer of said layers is attached to the inner surface of one of the lateral regions; characterized in that:- said plurality of layers comprise the first layer through a fifth layer; the first layer is permanently bonded to the inner surface of the lateral region with a first adhesive and the fifth layer is permanently bonded to the lateral region with a second adhesive, and the fourth layer and the fifth layer are permanently bonded to each other with a third adhesive; and the first layer through the third layer of the sheet material are temporarily joined together in a first region and the first layer through the fourth layer of the sheet material are temporarily joined together in a second region. the lateral region of the front waist region and the lateral region of the rear waist region are connected to each other by the intermediary of a sheet-like connecting member along at least one of both sides in the circumferential direction; the connecting member has its outer surface facing outward of the wearing article and is folded to form mountain folds (41, 42, 43) convexly pointing outward of the wearing article and extending in the vertical direction and valley folds (51, 52, 53) convexly pointing inward of the wearing article and extending in the vertical direction so that the mountain folds (41, 42, 43) and the valley folds (51, 52, 53) may alternate in the circumferential direction and may be expanded in the circumferential direction from the folded state as the connecting member is pulled in the circumferential direction; and the outer surface. of the connecting member is attached to the inner surface (48, 49) of the front and rear waist regions (2, 3); the connecting member is formed of sheet material which is folded in a zigzag manner with an edge pointing inwardly of the wearing article to define a plurality of layers, and a first layer of said layers is attached to the inner surface of one of the lateral regions; characterized in that:- said plurality of layers comprise the first layer through a fifth layer; the first layer is permanently bonded to the inner surface of the lateral region with a first adhesive and the fifth layer is permanently bonded to the lateral region with a second adhesive, and the fourth layer and the fifth layer are permanently bonded to each other with a third adhesive; and the first layer through the third layer of the sheet material are temporarily joined together in a first region and the first layer through the fourth layer of the sheet material are temporarily joined together in a second region.