With the rapid development and wide application of information technology focused on the Internet and mobile communication, e-commerce has gradually become a common business operation practice. Thus, how to develop e-commerce on the Internet has become a newly emerged decision-making problem facing various enterprises. To successfully implement e-commerce, this course aims to teach the basic principles and the main methods of e-commerce based on the practice of typical enterprises. The basic principles include the ecosystem and characteristics of the Internet market products or services in the Internet market, the basic classification of e-commerce and the three components of a business model (business mode profit mode, pricing mode). The main methods include e-commerce products or services design, e-commerce business model design, online and offline integration design, and basic methods of credit model design.