Patients who have been drinking water in their lives still feel dry mouth. It is best to improve the living environment first, the ground can be properly scattered some water, so that it is conducive to evaporation of air, humidity will improve, you can also buy an air humidifier. Patients can spray with open throat sword spray inside the throat, or with dexamethasone injection, gentamicin injection, together with nebulized inhalation treatment, can improve the discomfort of the mucous membrane of the throat, to relieve the symptoms of dry throat. At the same time, patients can also eat more fruits such as apples and pears, which can supplement vitamin C, which is conducive to the recovery of the pharyngeal mucosa function and increase the secretion of the pharyngeal mucosa, and if necessary, you can go to the hospital for further consultation.