What is health? Health is not only the absence of physical diseases and not feeling weak, but also a good state of mental and social adaptation. The call of “health for all, health for all” is to require individuals to achieve comprehensive health of mind and body. Two-thirds of all diseases are related to people’s lifestyles, and two-thirds of all diseases in general hospitals are related to psychosocial factors. What is mental health? Mental health refers to a state in which the human body, mind and society are in harmony, and it has the following characteristics: Normal intelligence: a normal level of intelligence is the most basic psychological condition for people to live, study, work and labor. Emotional stability and cheerfulness: emotional stability and cheerfulness is an important sign of mental health, if someone is often sad, discouraged and desperate, moody and unpredictable, it is a sign of mental unhealthiness. Behavior coordination and unity: psychologically healthy people, self-control is strong, their behavior is governed by consciousness and reason, thinking and behavior is coordinated and unified. If someone’s behavior and ideology contradict each other, thinking loosely broken, doing things in a haphazard manner, and behaving strangely, it suggests psychological abnormalities. Good interpersonal relationship: friendly with others, helpful, good at communication and problem solving, can reflect the person’s psychological in a healthy state. Good adaptability: The world is full of changes, situations are complex and setbacks are common. If a person can maintain a flexible and elastic mind, adapt to changes, and have good adaptability and ability to bear, this is also one of the signs of mental health. What are the specific criteria for mental health? 1.Adequate sense of security. 2.Full understanding of oneself and proper evaluation of one’s own ability. 3, realistic goals in life and work. 4.Keep in touch with the external environment frequently. 5.Keep the integrity and harmony of personality. 6.Have a good ability to learn and explore. 7.Be able to express and control their emotions moderately. 8.Maintain good interpersonal relationships with people. 9.Under the condition of not violating social moral norms, the basic needs of individuals should be satisfied to a certain extent.