To provide a clip and a molding method of the clip capable of easily attaching an attachment body such as a hood insulator to an attached body such as an engine hood.

With respect to an attachment hole formed by overlapping a first attachment hole 201 provided on a first plate material 200 and a second attachment hole 301 provided on a second plate material 300, this clip is equipped with a head 10 larger than the attachment hole, a leg 1 inserted into the attachment hole, and a pulling out preventing part disposed on the leg 1 on the opposite side of the head 10, and the pulling out preventing part is constituted by a provisional fixing part 2 for movably holding the first plate material 200, and a fixing part 4 for integrally fixing the first plate material 200 and the second plate material 300.