To manufacture a reflection body easily by attaching a rear surface of a reflection plate in which a reflection material is dispersed and arranged on a substrate having a leg part formed by bending two opposing end parts of the substrate substantially at a right angle and a locking part formed by bending a tip of the leg part and protruding it outward.

A reflection material such as reflection beads is dispersed and arranged in a surface of a molded product, and a projection for mounting is formed on a rear surface thereof. Next, both ends of a substrate of a mounting metal fitting 6 are bent substantially at a right angle to form a leg part 62. Then, a tip of the leg part is bent in the shape of J character to form a locking part 621. The projection on the rear surface of a reflection plate 5 is inserted into a mounting hole drilled at the center of the mounting metal fitting 6, is heated, and is crushed to form a reflection body by attaching the reflection plate 5 on the mounting metal fitting 6. At this time, the locking part 621 at the tip of the leg part 62 is engaged with an inner wall of a horizontal hole so that it does not come off. Consequently, it is possible to manufacture the reflection body provided with the leg part for fitting easily.