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 vividly call it as “trade without paper” or “bargain without paper”. From the perspective of technology, the EDI includes both hardware (mainly the network) and software (mainly software and standard of EDI). For the sake of safety, most EDI were not transmitted by network until the 90s of 20c, but by VAN (the value-Added Network) of exclusive use. What EDI needs is a standard software to translate information in the customer databases into the EDI-standard so as to deliver. Because the business enterprise of different professions adopt different format on the basis of their own business characteristics, therefore when transmitting documents, they must be translated into the EDI standard format. Before EDI, the primary stage of e-commerce, becomes universal in China, electronic commerce has developed quickly to the second stage.