The present invention is a disposable diaper (1), which has a longitudinal direction and a transverse direction that intersects with said longitudinal direction, and which is provided with an absorbent body (10) that has an absorbent (11) for absorbing excreted matter, a back waist-encircling section (30) located on one end of the absorbent body (10), and an abdominal waist-encircling section (40) located on the other end of the absorbent body (10). The disposable diaper is characterized in that: the two sides of the absorbent (11) in the transverse direction are provided with a pair of embossed lines (50, 50) formed by embossing from the skin side of the absorbent (11) and the embossed lines (50, 50) are provided with a vertex (52) that is located in the central section of the disposable diaper (1) in the middle of the disposable diaper (1) in the longitudinal direction or on the back waist-encircling section (30)-side of said middle, and protrudes inward in the transverse direction, and straight or outwardly curving curved back lines (56) that have the vertices (52) as starting points and extend outward in the transverse direction and toward the back waist-encircling section (30) in the longitudinal direction.La présente invention concerne une couche jetable (1), qui a une direction longitudinale et une direction transversale qui coupe ladite direction longitudinale, et qui comprend un corps absorbant (10) qui comprend un élément absorbant (11) pour absorber une matière excrétée, une section dencerclement de taille arrière (30) située sur une première extrémité du corps absorbant (10), et une section dencerclement de taille abdominale (40) située sur lautre extrémité du corps absorbant (10). La couche jetable est caractérisée par le fait que : les deux côtés de lélément absorbant (11) dans la direction transversale comportent une paire de lignes gaufrées (50, 50) formées par gaufrage depuis le côté peau de lélément absorbant (11) et les lignes gaufrées (50, 50) co
