A self-piercing rivet is disclosed. The self-piercing rivet integrally joins an upper plate member and a lower plate member overlapping each other. The self-piercing rivet includes a head portion, a shank portion integrally connected with the head portion and a plurality of ribs formed to an external circumferential surface of the shank portion along a length direction of the shank portion in a spiral form, wherein a drive slot is formed to upper portion of the head portion.