Abstract: With the innovation of educational models, case-based blended learning has become an important way to improve the effectiveness of graduate subject teaching. This article focuses on the curriculum reform of professional graduate subject teaching, taking the problems existing in traditional curriculum teaching as the starting point, and deeply explores the connotation, significance, path, and methods of case-based blended teaching reform. With case-based teaching method as the core, an online offline blended teaching mode is designed. This article adheres to the“trinity”educational philosophy, aiming to cultivate students' independent exploration and innovation abilities, shape their values, and finally summarize the reform experience, providing theoretical basis and empirical support for subsequent teaching practices.

Key words: Case-based teaching, Blended learning, Graduate education, Reform in teaching, Integration of online and offline, “Trinity”