E-commerce is an important component of social economy because of its rapid development, attracting more and more people' s attention. Different from traditional trade mode, e - commerce has its peculiar characteristics，and honesty and credit becomes an important aspect of a great deal of differences. Credit is soul of e-commerce; Credit is the key point of E-Commerce in china. In this thesis it discusses the problem of credit on e-commerce in china. This paper makes an analysis of credit in electronic commerce with the game theory. The principle of maximal profit is the main factor as to whether to obey credit or not. The analysis of using a game theory model once and using it repeatedly arid the analysis of a game theory model with outside intervene and evolutionary game theory analysis lead to a conclusion that strengthening cooperation and the government's power of supervision and punishment, the truthfulness of information , and a sound credit mechanism are the basic solution to the credit problem in electronic commerce.
【Key Words】 Electronic Commerce; Credit; Game Theory
