Music education is not only a process of imparting skills, but also a process of cultivating emotions. Positive emotion occupies the core position in music education, which can stimulate students' learning motivation and improve learning effect. It is found that students' positive emotion can be cultivated effectively by creating a good learning environment, teachers' emotional guidance, personalized teaching methods and encouraging practice performance. This kind of emotional cultivation not only enhances students' learning interest and self-confidence, but also promotes their musical creativity and imagination, and injects new vitality into the in-depth development of music education.