Analysis: The American Encyclopedia of Human Behavior points out: "The activities to promote human mental health should include three aspects: physiology refers to the protection of human cranial nerve system and various health care services from pregnancy to old age. (2) Psychologically, it means that at all stages of development from children to old age, psychological needs are met and emotional interference is reduced to a minimum. ③ Social aspect refers to the strengthening of social environment, social system and social organization function.