Mental disorders in the acute phase usually require hospitalization. First, because mental disorders in the acute stage, often have to be treated by hospitalization for detailed examination, such as physical examination, neurological examination, and necessary laboratory as well as instrumental examinations, which help to exclude the cause, or mental disorders caused by somatic diseases, which need to be treated for the cause in the first place. Secondly, in acute mental disorders, patients often have a wealth of psychiatric symptoms, such as hallucinations, delusions, excitement, agitated foci and even aggressive behavior, and some patients also have symptoms of self-injury, suicide, and injury. Inpatient treatment, 24-hour supervision and protective measures can effectively reduce the chance of self-injury, suicide, and injury to others. It is also possible to find the right psychotropic medication for the patient faster so that the patient’s psychiatric symptoms can be controlled and relieved in the first place to avoid aggravation of the mental disorder.