Abstract. Entrepreneurial mentors can provide university students entrepreneurs with entrepreneurial guidance and have an important role in improving the success rate of startups. However, because factors including the content, the form and the period of guidance are complex, how to evaluate the effective performance of the entrepreneurial mentor is an important issue. Based on the literature induction, combined with the characteristics of the entrepreneurial mentor's guidance, this paper puts forward the performance evaluation index system which based on the input-output conceptual model. It provides a solution to evaluate the entrepreneurial mentor effectively and comprehensively, and provides the basis for the entrepreneurial mentor management institutions to manage the entrepreneurial mentor.