The present invention prevents the worsening of an appearance of folding caused by unintended adhesion. An expanding/contracting structure of an absorbent article, said expanding/contracting structure being characterized by comprising: a first sheet layer (12S) that comprises a nonwoven fabric； a second sheet layer (12H) that comprises a nonwoven fabric and faces one surface of the first sheet layer (12S)； and a plurality of long, narrow elastic expanding/contracting members (19) that are provided between the first sheet layer (12S) and the second sheet layer (12H), along an expanding/contracting direction and with gaps between one another, wherein the first sheet layer (12S) and the second sheet layer (12H) have sheet bonding sections (70) that are bonded via a hot melt adhesive that is arranged intermittently in a lengthwise direction of the elastic expanding/contracting members (19), in a pattern of long, narrow stripes extending in a direction that intersects the elastic expanding/contracting members (19), and one of the first sheet layer (12S) and the second sheet layer (12H) is a low-adhesion nonwoven fabric for which the peel strength of the hot melt adhesive is lower than for the other.La présente invention empêche l'aggravation de l'aspect de pliage provoqué par une adhésion non souhaitée. L'invention concerne une structure d'étirement/de contraction d'un article absorbant, ladite structure d'étirement/de contraction comprenant : une première couche de feuille (12S) qui comprend un textile non tissé ； une seconde couche de feuille (12H) qui comprend un textile non tissé et qui fait face à une surface de la première couche de feuille (12S) ； et une pluralité d'éléments d'étirement/de contraction élastiques étroits et longs (19) qui sont situés entre la première couche de feuille (12S) et la seconde couche de feuille (12H), dans le sens d'étirement/de contraction et avec des espaces entre eux, la première couche de feuille (12S) et la seconde couche de feuill
