The prolonged presence of a stressor or difficult situation, combined with the fact that the patient has not necessarily a personality defect, produces predominantly emotional disorders such as worry and depression, along with maladaptive behavioral disorders or physical dysfunction and impaired social functioning. The duration of the illness is often long, but generally does not exceed 6 months. The onset is usually within 1 month of a stressful event or life change. As the event progresses, the stimulus is removed or a new moderate is formed by the adjustment, and the psychiatric disorder remits. Symptom criteria: 1, there is an obvious life event as the cause, especially the change of life environment or social status (such as immigration, leaving the country, joining the military, retirement, etc.); 2, there is reason to infer that both life events and personality basis play an important role in causing mental disorders; 3, the emotional symptoms such as depression, anxiety, fear, and at least one of the following: ① maladaptive behavior disorders, such as withdrawal, lack of hygiene (2) physiological dysfunction, such as poor sleep, loss of appetite, etc.; 4. Presence of symptoms seen in affective mental disorders (excluding delusions and hallucinations), neurosis, stress disorders, somatoform disorders, or conduct disorders and various symptoms that do not meet the diagnostic criteria for the above disorders. Severity criteria: impaired social functioning. Course criteria: psychiatric disorder begins within 1 month after the onset of a psychosocial stimulus (but not catastrophic or unusual) and has met the symptom criteria for at least 1 month. After the elimination of the stressor, the symptoms persist generally for no more than 6 months. Exclusion criteria: Exclusion of affective mental disorders, stress disorders, neuroses, somatoform disorders, and conduct disorders.