E-Commerce refers to conducting business activities based on microcomputer and network communication technologies, which is actually the electronization, networkization, and informationization of traditional business activities. It is a transaction of buying or selling online, which means to finish commodity exchange through electronic trading on the Internet, Intranet, or Value-Added Network (VAN)。 Nowadays, along with its high-speed development, e-commerce concerns not only the activities of commodity exchange, but also the related services such as logistics distribution.