Starting with five barriers of domestic corporation knowledge management, this paper demonstrates that the knowledge management of domestic corporations is in initial stage, it concludes that the central problem in primary stage of knowledge management is to choose a reasonable model of knowledge management correctly. The paper analyzes four factors, including the highly relative customers of knowledge management in corporations, the difference level of prod- ucts, the component of corporation knowledge and the life circle of products. Furthermore, it puts forward the analysis CDKL model to help the domestic corporations choose right knowledge management model.