There are many reasons for dry mouth, and some diseases have a clinical manifestation of dry lips. Patients with Candida infections, for example, often suffer from dry mouth due to the infectious effects of viral attacks. There are also patients suffering from dry mouth, dry mouth is also a common clinical manifestation, and dry mouth there is a reason is because part of the patients because of the need for disease treatment, after chemotherapy, radiation therapy, so that some of the facial glands are injured, the glandular secretion function is reduced, so that the symptoms of dry mouth. Many people in daily life have the problem of dry mouth because the living environment is too dry, resulting in the problem of dry lips after a person wakes up early, which can be relieved by only a small amount of water supplementation. If there are patients who have the above mentioned problems of dry mouth due to diseases, they should promptly go to the appropriate professional department for treatment and take gland repair or anti-infection drugs to relieve the symptoms.