The disclosed disposable diaper (1) is provided with an absorbent body (4) that contains an oblong absorbent core (40) and comprises an abdominal part (A), crotch (C) and back (B). The absorbent core (40) has a high basis weight part (41) in the center of the width direction of the crotch (C) and low basis weight parts (42) of lower basis weight than said high basis weight part (41) on both sides of the high basis weight part (41). The high basis weight part (41) has a central fold-inducing part (43) that is configured from a slit, groove or fiberless region that extends in the longitudinal direction of the absorbent core (40). Each low basis weight part has a side fold-inducing part (44) that is configured from a fiberless region. On the abdominal (A) side of the absorbent core (40) in the longitudinal direction, the central fold-inducing part (43) extends past the ends of the side fold-inducing parts (44) and on the back (B) side of the absorbent core (40) in the longitudinal direction, the side fold-inducing parts (44) extend past the end of the central fold-inducing part (43).本發明之丟棄式尿褲(1)具備包含縱長之吸收性芯(40)之吸收體(4)，具有腹側部(A)、下襠部(C)及背側部(B)，吸收性芯(40)係於下襠部(C)中之寬度方向中央部具有高基重部(41)，於高基重部(41)之兩側具有基重低於該高基重部(41)之低基重部(42)，於高基重部(41)具有由在吸收性芯(40)之長度方向上延伸之狹縫、溝槽或非纖維堆積部構成之中央折彎誘導部(43)，於低基重部(42)分別具有由非纖維堆積部構成之側部折彎誘導部(44)，於吸收性芯(40)之長度方向之腹側部(A)側，中央折彎誘導部(43)係自側部折彎誘導部(44)之端部位置延伸出去，於吸收性芯(40)之長度方向之背側部(B)側，側部折彎誘導部(44)係自中央折彎誘導部(43)之端部位置延伸出去。
