Extracurricular activities are a specific category of pedagogy theory. There are differences and connections between it and classroom teaching, and its connotation and extension are strict. On the one hand, both of them are aimed at cultivating all-round socialist builders, and the educational purpose is unified. On the other hand, classroom teaching is an educational form in which teachers guide students to learn systematic scientific knowledge, develop intelligence and physical strength, and cultivate good ideology and morality according to the requirements and scope stipulated in the syllabus.