There are provided a composition processing system, a composition processing apparatus, and a composition processing method that allow efficient inspection. A composition processing system includes an image capturing apparatus A, a first computer B, and a second computer C. The first computer B includes: a first image acquisition unit; a composition supplementary information acquisition unit that acquires composition supplementary information for composing a first large-area image; a minified separate image generation unit that generates minified separate images acquired by reducing image sizes of the separate images; a second large-area image generation unit that composites the minified separate images on the basis of the composition supplementary information to generate a second large-area image; and an image display unit that displays the second large-area image. The second computer C includes: a second image acquisition unit that acquires from the first computer the plurality of separate images to which the composition supplementary information is added; and a first large-area image generation unit that composites the plurality of separate images on the basis of the composition supplementary information to generate the first large-area image.