Abstract:The innovation system of knowledge has become an important source of the construction of an innovation-oriented country. Unlike the endogenous model of the western developed countries, the key to the construction of the knowledge innovation system with Chinese characteristics is to promote the institutional-ism between the university and the scientific research institutions innovation organization, innovation process integration, innovation function coupling. From the perspective of triple integration, the paper analyzes the textual measurement and content of 346 policy texts from 1955 to 2017, and finds out that the trend of policy promulgation has obvious characteristics of stage. Institutional integration and process integration use application tools and authoritative tools too much. The functional coupling policy is too little, and the lack of voluntary tools, communication and regulatory tools. Our country needs to strengthen the classification of higher education institutions and research institutes to guide the formulation and implementation of policies to enrich the institutional joint policy toolbox. To establish a balanced and reasonable teaching and research evaluation system to promote the integration of knowledge innovation process. Actively introduce voluntary tools, communication and regulatory tools to enhance the level of knowledge innovation system.