A nonwoven fabric, comprising thermoplastic fibers, a first surface side and a second surface side which is a surface side opposite to the first surface side, wherein the nonwoven fabric has outer surface fiber layers on the first surface side and the second surface side in which fibers are oriented in plane direction； and a plurality of connecting portions arranged between the outer surface fiber layer on the first surface side and the outer surface fiber layer on the second surface side, in which fibers are oriented in thickness direction of the nonwoven fabric； and part of the fibers is fused to each other between the outer surface fiber layer on the first surface side, the outer surface fiber layer on the second surface side, and the connecting portions.
