To sum up, the enterprises from their birth-date up to now have gone through five stages. Theories of business management corresponding the five stages have changed and developed. At each stage there were and are corresponding theories such as theories of the establishment and populization of modern enterprise System, theory of diversification, theory of multi-national corporation, restructure movemeut, business re-engineering thought, and so on. At present the newest research subject being followed with interest in business management in foreign countries basically is business reengineering thought, which is the main stream. Among these theories the conflict management theory, the theory of the change of corporation paradigm, the theory of the growth of the firm are of great reference value for carrying out a research into the enterprise in china. To do paradox research on business management including recent research on the unlearning theory, the theories of failure, the innovation on the border, overextension and the accidental will give us the completely new and distinctive stimulus of knowledge with the unique position.