Dry mouth and drinking water can not be relieved may be lipitis, dry syndrome, systemic diseases, etc., accordingly, mainly for local drug treatment. 1. Lipitis: If lipitis causes dry mouth and drinking water can not be relieved, you can local wet compresses, closed treatment. 2. Dry syndrome: mainly given glucocorticoid drugs or immunomodulator drugs, such as thymidine for treatment. 3. Systemic diseases: hyperthyroidism, diabetes and other systemic diseases may cause dry mouth and drink water can not be relieved, generally dietary modification, oral hypoglycemic substances. It is recommended to go to the hospital in time and give targeted treatment or therapy under the guidance of the doctor.