进一步深化国有企业混合所有制改革是调动国有经济活力、放大国有资本作用的重要举措，是新时代经济社会发展的趋势之一。文章以中小型国有企业为研究对象，分析非实际控制人在中小型国有企业中的治理参与度对企业创新的影响。研究表明：当非实际控制人参与企业治理时，企业创新的可能性更高；非实际控制人的治理参与度与企业创新存在正相关关系，非实际控制人治理参与度越高，企业创新能力越强、水平越高。进一步分析发现，不同非实际控制人的治理参与对企业创新的影响存在差异，独立性越强的非实际控制人参与治理后对企业创新的促进作用越大。今后在国有企业混合所有制改革的过程中要引入优质且具有创新作用的非实际控制人，提高非实际控制人的话语权，建立健全政策法规，充分发挥非实际控制人对企业创新的促进作用。

: Further deepening the reform of mixed ownership of state-owned enterprises is an important measure to mobilize the vitality of the state-owned economy and amplify the role of state-owned capital, and is one of the trends of economic and social development in the new era. Taking small and medium-sized state-owned enterprises as the research object, this paper analyzes the influence of non-actual controller's governance participation in small and medium-sized state-owned enterprises on enterprise innovation. The results show that the possibility of innovation is higher when non-actual controller participates in governance; At the same time, the governance participation of non-actual controllers is positively correlated with enterprise innovation. The higher the governance participation of non-actual controllers, the better the enterprise innovation. Further research shows that the governance participation of different non-actual controllers has different impacts on enterprise innovation, and the more independent non-actual controllers participate in governance, the stronger the promotion role of enterprise innovation. In the future, in the process of mixed ownership reform of state-owned enterprises, it is necessary to introduce high-quality and innovative non-actual controllers, improve the voice of non-actual controllers, establish and improve policies and regulations, and give full play to the role of non-actual controllers in promoting enterprise innovation.