[Problem] Provided is a pants-type disposable diaper cover, which can mount an absorptive pad easily and which can hold the mounted absorptive pad snugly without any positional displacement.[Means for Resolution] The pants-type disposable diaper cover 20 has a structure, in which elastically extensible members are arranged between two nonwoven-fabric sheets 20A and 20B, and in which a waist opening 30 and a pair of right and left leg openings 29 are formed. A pad-fixing sheet 31 having its front end portion and back end portion fixed is arranged in a diaper cover region corresponding to the mounting portion of the absorptive pad 10. The diaper cover 20 includes at least elastically extensible waist members 24 arranged around the waist opening, and a plurality of curved elastically extensible members 26 and so on and 28 and so on arranged to extend in a front F and in a back B from the body sides to the crotch side, to cross the arranged portions of the absorptive pad on the crotch side, and then to draw a plurality of loci extending from the crotch side to the body sides.