A nonwoven fabric (1A) according to the present invention has multiple thermally fusion-bonded parts (12) which are formed by thermally fusing-bonding intersection points between constituent fibers (11) to each other. The constituent fibers (11) include highly-stretchable fibers. In each of the constituent fibers (11), there is a large diameter portion (17) between adjacent two thermally fusion-bonded parts (12, 12), wherein the large diameter portion (17) has a larger fiber diameter and is sandwiched between two small diameter portions (16, 16) each having a smaller fiber diameter. Each of the constituent fibers (11) is so configured that the hydrophilicity of each of the smaller diameter portions (16) is smaller than that of the larger diameter portion (17).本發明之不織布(1A)係具備複數個使構成纖維(11)彼此之交點熱熔合而形成之熔合部(12)者。構成纖維(11)包含高伸度纖維。著眼於1根構成纖維(11),該構成纖維(11)於相鄰之熔合部(12、12)彼此之間具有由2個纖維直徑較小之小徑部(16、16)所夾之纖維直徑較大之大徑部(17)。並且,以使小徑部(16)之親水度小於大徑部(17)之親水度之方式形成。1A‧‧‧不織布11‧‧‧構成纖維13‧‧‧凸條部13a‧‧‧頂部區13b‧‧‧底部區13c‧‧‧側部區14‧‧‧凹條部a‧‧‧不織布之正面b‧‧‧不織布之背面Y‧‧‧方向Z‧‧‧厚度方向
