To promote individuation of portable telephone set furthermore because a portrait, especially an image of tiny stickers from an instant photo machine can be displayed on an image receiving screen of the portable telephone set of its own possession.

The communication network system that transmits an image to the mobile phone that interconnects an interactive image data synthesizer A that is provided with a communication means and synthesizes a plurality of image data, a relay image distributor B provided with a communication means that receives the synthesized image and applies transmission processing of the synthesized image to the mobile phone, and the mobile phone C by means of communication, where the interactive image data synthesizer A transmits the synthesis image to the portable telephone set C directly or via the relay image distributor B so as to allow the portable telephone set C to display the synthesis menu on the receiving screen.