This paper reviews the decision-making consultation work of the China Association for Science and Technology (CAST), especially, the construction of the think tank for the science and technology innovation since the 18th CPC National Congress, or, the ninth National Congress of the CAST, as well as some successful experiences and typical practices. Based on the principle of "developing through inheritance and innovating through development", the future decision-making and consulting work of the CAST is prospected. This work is of certain reference value fur the decision-making and consulting work of the science and technology association system and other mass organizations and the construction of the innovative think tank.

This paper discusses the building of a high-end science and technology innovation think tank, with the National Academy of Innovation Strategy(NAIS,CAST) as an example, analyzes and explores the effective path for the China Association for Science and Technology to build the high-end science and technology innovation think tank. Based on the analysis of the achievements and problems of the China Association for Science and Technology in the construction of the high-end science and technology innovation think tanks in the past five years, the countermeasures and suggestions are proposed. It is shown that the construction of the high-end science and technology innovation think tanks of the China Association for Science and Technology should further clarify the mission and the positioning; strengthen the reform and the decentralization of the think tank institutions, optimize the operation mechanism of the science and technology innovation think tanks; better use the organizational advantages of the science association system, and enhance the influence of the science and technology innovation think tanks.

As a bridge that links the Communist Party of China and the Chinese government with the country's science and technology community and with the fixed-term appointment of the representatives, the China Association for Science and Technology (CAST) carries out the Supported-Research Project for the Representatives of the 9th National Congress of the CAST during the period from 2016 to 2020. Through the project, the representatives can make deep studies and give more proposals for the development of our country and the CAST. This paper analyzes the effectiveness of the Supported-Research Project for the Representatives of the 9th National Congress of the CAST through the policy text analysis and the discussions with the project managers and the representatives, and the effectiveness of the project and the good experience are confirmed. Also, some deficiencies of the project and the reasons are analyzed, to support the proposals to improve the implementation of the project.