To provide an image-forming material, an image formation method and a method for manufacturing a color proof, where even when laser recording is performed with a higher energy by multi-beam laser light, a light-to-heat conversion substance or a decomposition product thereof is prevented from transferring to the image-forming layer and at the same time, a transfer image having sufficiently high image density, high resolution, and no layer fogging can be formed on an image-receiving sheet.An image-forming material comprising an image-receiving sheet having at least an image-receiving layer and a thermal transfer sheet comprising a support having thereon at least a light-to-heat conversion layer and an image-forming layer, wherein the light-to-heat conversion layer of the thermal transfer sheet comprises a homopolymer and/or a copolymer of vinylpyrrolidone.