This paper first emphasizes the close relationship between the curriculum and the specialty, and focuses on the construction and development of the specialty according to the certification standards. It further details the online and offline mixed teaching reform practice, taking the core curriculum group of electrical engineering and automation specialty as an example. It pays special attention to the successful flipping case of the course "Principles of Power System Relay Protection," and emphasizes the importance of flipping classroom and hybrid teaching. The article also describes in detail a successful flip case, a small class discussion class with the theme of ' large-scale setting calculation ', which promotes students ' positive thinking and discussion, and improves the learning effect. Through the analysis of the achievement of the course objectives from the perspective of volume performance and engineering certification, the article demonstrates the positive effects of the curriculum reform and provides useful experience for deepening the talent training model. By analyzing the achievement of graduation requirements supported by the curriculum, this paper highlights the key to the teaching reform of the professional core curriculum group.