Dry mouth may be related to physiological dehydration, dry syndrome, diabetes, etc., which requires general treatment and medication. 1. For those caused by physiological dehydration, attention should be paid to the daily water intake to prevent dry mouth caused by dehydration. 2. For dryness syndrome, oral medication such as salivary gland secretion promoting drugs, hydroxychloroquine or methotrexate and other immunosuppressants can be taken as prescribed by the doctor; when conventional treatment is not effective, biological agents such as rituximab can be taken orally. 3. For those caused by diabetes, oral metformin, acarbose and other hypoglycemic drugs or insulin injections should be taken as prescribed by the doctor, which can control blood sugar and relieve the symptoms of dry mouth. It is recommended that people with dry mouth go to the regular hospital in time to consult a doctor to clarify the cause, if you need treatment, you should standardize the treatment of medication under the guidance of a doctor.