(1) take students as the center and promote students' psychological development. Modern educational theory holds that school education should be humanized, with emotional education and personality cultivation as the main part, supplemented by knowledge education. It emphasizes that successful education lies not in how much knowledge teachers give students, but in whether teachers can cultivate students' sound personality in ordinary teaching. In subject teaching, we should respect students' dominant position, pay attention to arouse students' consciousness and enthusiasm, let students know that they are not only the subject of accepting knowledge, but also the subject of psychological development, and let students fully realize that it is their important task to improve their psychological quality, tap their psychological potential, develop their ability and perfect their personality.