There are various reasons for thirst at night, both physiological and pathological. For example: in the oral cavity, the physiological cause can be the lack of drinking water leading to frequent thirst, or may be due to prolonged open-mouth breathing leading to dry mouth and thirst, etc. The pathological cause may be related to some oral mucosal diseases, such as dry syndrome, which can be manifested as dryness of the mucous membrane of the whole body, usually manifested as dry mouth and thirst, dry eyes and nose, dry throat, itchy skin and other symptoms; it may also be caused by the reduction or degeneration of the oral glands of the mouth Dryness and thirst. In endocrine, physiological causes may be dry mouth, hot flashes, anxiety, depression, etc. caused by hormonal changes in menopausal women. Pathological causes may be related to some endocrine diseases, such as dry mouth in diabetic patients, especially in typical patients who often have the “three more and one less” performance of drinking more, eating more, urinating more and losing weight; some pituitary tumor patients may also show dry mouth and thirst. If you have frequent thirst, you can first improve your oral mucosa by increasing water intake and observe whether your thirst is relieved. If there is no relief or relief is not obvious and there are other uncomfortable symptoms, you need to go to a regular hospital promptly. In addition, usually pay attention to healthy work and rest, regular diet, strengthen exercise, enhance physical fitness, and keep a happy mood.