Happiness classes in universities are not easy to mix, because there are exams and assessments at ordinary times. We should take them seriously and don't mix them up. When universities offer happiness courses, students can improve their happiness from unhealthy to healthy and from healthy to happy through a rich and perfect mental health curriculum system, and they can also learn some related knowledge. Happy class is actually a part of positive psychology. Compared with the study of our material life, the study of humanistic human behavior and various ideological spirits, this humanism pays more attention to subjective human emotions and mental States. Different from English class and history class, the most important thing for happy class is to apply what you have learned to real life. Change is not easy unless people introduce cognitive and emotional changes at the same time as behavior changes.