To provide a light attaching structure to a vehicle bumper, allowing a big reduction in a production cost of a blocking body for blindfolding a housing part of a light body attaching part, allowing an extremely easy blocking operation, and excellent in practicality.

In this light attaching structure to a vehicle bumper 1, a light body 3, such as a fog light, an indicator light, and so on, is fixedly housed in a housing part 2 formed in the bumper 1, while a front opening part 2A of the housing part 2 is blocked with a blocking body 4. The blocking body 4 is not an integrally molded body formed by a mold, but is a cut plate body, such as a mesh plate formed by providing a reinforcing frame to a cut mesh material, a punching metal, and so on. One end part of the blocking body 4, i.e., the cut plate body is provided with inserting rod parts 4A to be inserted and locked into housing part side lock parts 2B formed in an inner side part of the housing part 2, while the other end part of the blocking body 4 or the neighborhood of the other end part is provided with a blocking lock part 4B to be locked to a light body side lock part 5 provided toward the light body 3.