Abstract:At present, the research of science and technology decision-making think tank lacks systematic combing of domestic science and technology decision-making think tank system, and fails to analyze its internal operation mechanism. On the basis of a comprehensive combing of Chinese science and technology decision-making think tank system, this paper, based on the input-output relationship of science and technology decision-making think tank, constructs an analysis framework of internal operation mechanism of science and technology decision-making think tank, and puts forward six characteristics of the internal operation mechanism of China's science and technology decision-making think tanks, which includes the organization and management mechanism within the system. Finally, the paper puts forward countermeasures and suggestions based on the characteristics of operation mechanism of foreign science and technology decision-making think tanks.