To provide an underpants-type disposable diaper in which a part where the underpants-type disposable diaper does not overlap with an absorbing element is thin and suitable for expansion and contraction, whereas a part where the underpants-type disposable diaper overlaps with the absorbing element has an excellent fluffy feeling to the touch. The present invention that solves the above described problem is provided with a front side exterior body (12F), a rear side exterior body (12B), and an interior body (200) that is attached so as to reach from the front side exterior body (12F) to the rear side exterior body (12B) and incorporates an absorbing element (50), wherein: a cover sheet (13) that comprises a non-woven fabric and extends in a front-rear direction (LD) outside an outer sheet layer (12S) in an exterior body at the center side in a width direction with respect to the positions of both side rims of the absorbing element (50) is provided； no non-woven fabric other than the cover sheet (13) is provided, outside the positions of both side rims of the absorbing element (50) in a width direction and outside the outer sheet layer (12S) in the exterior body； and at least both side end portions of the inner surface of the cover sheet (13) are adhered, via a hot melt adhesive (13H), to their respective opposing surfaces in an area excluding front and rear end portions.本發明所要解決的問題在於提供一種短褲型拋棄式尿布及其製造方法，在短褲型拋棄式尿布中，不與吸收構件重合之部分較薄而適合伸縮，並且，與吸收構件重合之部分在鬆軟的觸感這一方面優異。 上述問題藉由下述方案得到了解決，一種短褲型拋棄式尿布，其具備：前側外裝體12F；後側外裝體12B；及，內置有吸收構件50之內裝體200，該內裝體200被安裝成從前側外裝體12F遍及至後側外裝體12B；其中，所述短褲型拋棄式尿布具有由不織布構成之罩片13，所述罩片13以穿過比吸收構件50的兩側緣的位置靠寬度方向中央側且比外裝體中的外側片層12S靠外側的部位的方式在前後方向LD上延伸，在比吸收構件50的兩側緣的位置靠寬度方向外側且比外裝體中的外側片層12S靠外側的部位，不具有罩片13以外之不織布，並且，罩片13的內表面，在除了前後端部之外的區域中，至少兩側端部藉由熱熔黏接劑黏接於對向面。
