In this disposable diaper (1), the outer sheet (51) of the facing material (5) forming the outer surface of the disposable diaper (1) is made of spunbonded nonwoven fabric. The spunbonded nonwoven fabric of the outer sheet (51) has a basis weight of 19 g/m2 or less. The spunbonded nonwoven fabric of the outer sheet (51) also has a mean deviation (SMD) of surface roughness of 3.20 μm or less. The spunbonded nonwoven fabric of the outer sheet (51) also has a mean deviation (MMD) of the coefficient of friction 0.0085 or less. Additionally, the spunbonded nonwoven fabric of the outer sheet (51) has an MD bulk softness of 5.0 cN or less.
