To provide a device and a program of electronic commerce capable of easily disclosing information held by a producer regarding articles dealt with by each seller to a consumer and easily performing maintenance as well.

A server of a seller provides a web page 4 having at least two frames, namely, a frame 5 of a web site of the seller for performing the electronic commerce about the articles of the producer between the seller and the consumer and a frame 6 of a web site of the producer to a request from a computer of the consumer to be connected via the Internet. When the consumer places orders of each article by specification of article numbers of each article placed on the web site of the producer of the frame 6 from the web site of the seller of the frame 5, the server of the seller provides a web page displaying prices of the articles to be ordered to the computer of the consumer by referring to a database.