To provide a structure for a leaf spring that can be simply manufactured in simple constitution to be largely bent in composing the leaf spring using plastic, and a support using the structure for a leaf spring.

A plurality of curvature parts R-1 to R-6 are provided from an end part 111 of a first leaf part to an end part 112 of a second leaf part. when force is added to the leaf part, the force is dispersed to the respective curvature parts. The structure for a leaf spring is integrally molded of plastic.