To provide a decoration system which can apply a user's originality-rich decoration of to the outer surface of a mobile telephone.

This decoration system is intended for decorating the outer surface of the mobile telephone 2, and includes: an acquiring means which acquires images, a first sampling means which samples an image to be set on a desk-top screen from among the acquired images, a sending means which sends the image sampled by the first sampling means to the mobile telephone 2, a second sampling means which samples an image to be used for decoration on the outer surface of the mobile telephone 2, and a producing means which produces a decorative component for the outer surface of the mobile telephone 2 with a decorative image sampled by the second sampling means.