1, the whole treatment of antipsychotic drug treatment should follow the principle of early, adequate, full course of treatment. Once the diagnosis is confirmed, drug treatment should be started and the drug should reach a sufficient therapeutic dose. After the symptoms of the acute phase disappear, it is still necessary to consolidate treatment for 3-6 months. 2.Small dose starting treatment should start from low dose and gradually increase the dose. When reaching a high dose, patients need to be closely monitored for adverse reactions, but in general, the drug should not be stopped suddenly. 3. Maintenance treatment should be maintained for 1-3 years after the first attack, and for the second or multiple relapses, the maintenance treatment should be longer, or even lifelong medication. Maintenance therapy has a definite effect on reducing relapse or re-hospitalization. The dose of maintenance therapy should be individualized and can be adjusted based on the dose during the acute treatment period. Children or the elderly are more sensitive to the reaction of the drug and should generally be taken in half. 4, individually applied whether in the acute treatment or maintenance treatment, should be used alone as far as possible, only when the treatment of refractory cases to consider the combination of drugs. 5, reflecting individualization Different patients have different reactions and side effects to drugs, therefore, the dose selection should follow the principle of individualization. In addition, since different drugs have different effects on the heart, liver, kidneys and other major organs, attention should also be paid to choosing the appropriate drug variety and dose if the patient suffers from a certain somatic disease.