Abstract:Based on the connotation and feature of nuclear power enterprise open innovation, This paper designs the open innovation ability evaluation index system of nuclear power enterprise from three aspects of innovation resource acquisition, innovation resource integration and innovation diffusion, and constructs an improved evaluation model combined with the entropy weight method and numerical transformation in order to avoid the subjective influence in the evaluation process and provide the evaluation result with an absolute numerical meaning. Furtherly, the paper selects 71 listed nuclear power companies in China for empirical research, the research results show that on the one hand, the current open innovation capability of China's nuclear power companies is below the medium level as a whole, and there is a large room for improvement, on the other hand, it is verified that the improved evaluation model has good applicability in the comprehensive evaluation of innovation ability.