A disposable diaper easy to put on a wearer in a standing position comprising a liquid permeable topsheet 2, a liquid impermeable backsheet 3, an absorbent member 4 interposed between the two sheets and having a pair of laterally extensible side parts on the below-waist portion of one longitudinal end section and a pair of standing gathers, wherein the region having the absorbent member in the crotch section contains a region having a lateral flexural stiffness of 25 gf/50 mm or less, the standing gathers are formed by fixing an elastic member at a fixing extension ratio of 100% or higher, and the standing gathers on each side, when extended in their non-fixed state, have a tensile load of from 20 to 120 gf at an effective extension ratio (fixing extension ratio - 30%), and provides a tensile load increase rate of 1.0 gf/% or lower required to extend from a 20% extension ratio to the effective extension ratio. IMAGE
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