To provide an accessory ordering information processor and an accessory ordering method using a communication network for taking order for an accessory.

This accessory ordering information processor receiving an order for an accessory is provided with a design information database, a material information database, a design displaying means, a selected design receiving means, a material displaying means, a selected material receiving means, an estimation displaying means, and an order accepting means. On demand from a terminal, design information is provided by the design displaying means on the basis of the design information database, and material information is provided by the material displaying means on the basis of the material information database. On the basis of the design and the material received by the selected design receiving means and the selected material receiving means, an estimated price is calculated by the estimation displaying means so as to be displayed in the terminal, and then, an ordering signal is received from the terminal by the order accepting means.