The United Nations World Health Organization defines health as “health not only as the absence of physical disease, but also as the presence of a complete mental, physical state and social adaptability.” The highest goal of mental health is to improve psychological quality, so that people can become people with a sound personality, good intelligence, moral and cultivated, and adapt to social functions. Prone to psychological disorders, such as neurosis, severe mental illness, psychogenic disorders, psychosomatic disorders and various psychological disorders, in order to prevent many psychological aspects of the disease does not produce pathological psychology, it is necessary to pay attention to mental health, do a good job of diversion and prevention. For any disease, prevention is more important than treatment, the prevention of mental disorders in China is to carry out three levels of prevention. (a) primary prevention: aimed at eliminating or reducing the disease back or pathogenic factors to prevent or reduce the occurrence of mental disorders. This is the most active and proactive preventive measures. ① For certain mental disorders whose causes are clear, decisive measures should be taken to provide timely specialist treatment; ② Strengthen marriage guidance and prohibit marriage between close relatives; ③ Avoid marriage between patients with mental disorders and between members of high-incidence families and patients. (2) Secondary prevention: early detection, early diagnosis, early treatment. Strive for complete remission and good healing, and prevent relapse; ① improve the incorrect view of society and family to patients with mental illness, family members should face the reality, early detection, early treatment; ② first treatment to strive to achieve complete remission, family members should take the affected person to see a specialist hospital, according to medical advice; ③ patients whose condition has improved or healed, should master some mental health knowledge and some general knowledge of mental illness, have a correct understanding of their (3) For patients who have recovered or recovered, they should master some mental health knowledge and some general knowledge of mental illness, have a correct understanding of their illness, make regular outpatient visits, adhere to medication, and reduce the chance of relapse; (4) Establish a correct outlook on life, treat various psychosocial factors in real life correctly, and eliminate unfavorable factors that may cause relapse in order to consolidate the treatment effect. (3) Tertiary prevention: The purpose of tertiary prevention is to make good rehabilitation arrangements for people with mental disabilities, to promote the recovery of patients’ social functions to the maximum extent possible, and to reduce the occurrence of mental disabilities as much as possible. (1) Inpatient treatment is the beginning of rehabilitation work, open management of hospitals facilitates the interaction of patients, various recreational and sports activities are beneficial to the physical and mental health of patients, and the training of skills lays a good foundation for patients to return to society; (2) for community patients, various local psychiatric prevention and rehabilitation, institutions manage and provide effective services, such as work therapy stations, care groups, family beds and other forms of rehabilitation facilities. consolidate the treatment effect of patients, reduce relapse, and reduce mental disability; ③ treat patients correctly, reduce the psychological pressure on mental patients, and promote interaction between patients and people around them: ④ the ultimate goal of rehabilitation measures is to resettle the thinkers to work, so that they can function as much as possible in the workplace or in domestic work.