Under the background of globalization and the rapid growth of power technology, the teaching of Electrical power system (EPS) relay protection is facing new challenges and opportunities. The traditional teaching mode and content have gradually exposed the problems of being out of touch with the needs of the industry and lacking practicality and innovation. At the same time, engineering professional certification, as an internationally accepted education quality assurance system, provides a clear direction for the educational reform of power engineering specialty. In order to adapt to this change, this article deeply studies the teaching status of EPS relay protection course, finds its existing problems, and puts forward corresponding reform ideas. In order to meet the development needs of the power industry, this article puts forward a student-centered teaching concept, combines the perspective of liberal arts, strengthens the humanistic care and social responsibility education of the course, and enhances students' communication and expression ability. Through the reform, it is expected to cultivate power engineering and technical personnel with innovative spirit, practical ability and social responsibility, and make contributions to the safe and stable operation of the EPS. In this article, the reform ideas and implementation suggestions are elaborated in detail, which provides useful reference for the education of power engineering specialty.