Abstract:The system of scientific and technological innovation is difficult to quantify, and there is currently relatively little research on the evaluation of scientific and technological innovation systems. In order to further strengthen the understanding of China's scientific and technological innovation system and institutional construction, provide tool references for evaluating the effectiveness of scientific and technological innovation systems, provide relevant reliable information for the implementation, execution, and development of China's scientific and technological innovation system, and promote the coordinated promotion of scientific and technological innovation and institutional innovation in China, we attempt to explore the construction of a national level evaluation system for scientific and technological innovation systems. Construct a national evaluation index system for scientific and technological innovation system from five dimensions: scientific and technological investment system, scientific and technological management system, scientific and technological evaluation system, innovative talent cultivation system, and scientific and technological policy support system. Through questionnaire research, use fuzzy comprehensive evaluation method and combine subjective and objective weight assignment to evaluate the overall and five dimensional levels of the system. The results showed that the level of China's scientific and technological innovation system is at a good level, with the highest evaluation of the effectiveness of university scientific and technological innovation system, followed by personnel from research institutes and research and development institutions; The innovation talent cultivation system has the highest weight among the five dimensions and is the biggest influencing factor on the technology innovation system. Based on the research findings, countermeasures and suggestions for further improving China's scientific and technological innovation system are proposed: increasing investment in scientific and technological innovation resources and optimizing resource allocation, actively constructing efficient scientific and technological management mechanisms, improving innovation efficiency, strengthening standardization of scientific and technological evaluation, highlighting innovation orientation, strengthening the systematic design of innovative talent systems, and exploring the formation of a more scientific, reasonable, and dynamic talent cultivation mechanism.