Phase One: E-commerce based on EDI (Electronic Data Interchange) EDI (Electronic Data Interchange): The EDI originated in the 60s of the 20th century. The large-scaled business enterprise in the developed countries carried out the EDI basically in the 80s. The EDI of our country began from the 80s in 20 centuries. EDI is a kind of teleportation method to transmit business documents from one computer to another. Because EDI reduces the paper note greatly, people EDI enjoys advantages and tremendous strength in decreasing enormously the intensity, mistakes and cost to make and handle documents on the one hand, and in improving efficiency to a large extent on the other hand. Therefore, it speeds up the development of international business. However, the high cost of VAN and EDI communication system hinder the expansion of e-commerce based on EDI. Moreover, EDI is only suitable for large-scaled transnational corporation rather than medium and small-sized ones, for it does not take information share into account. Since both the increasing large-scaled transnational corporations and many a medium and small-sized enterprise thirst for information sharing, the establishment of a new electronic information exchange system of low cost is on the agenda to realize the information sharing. In the middle and late 90s of the 20th Century, owing to the prompt popularity of Internet, from universities to enterprises, and then even to common people’s families, Internet functions from the information sharing to a popular mass media.