There is no such thing as a remedy for dry mouth. Dry mouth may be a deficiency of Yin and internal heat, external dryness and heat of the evil, the body lack of fluids, etc., may also be simply caused by too little water. 1. Yin deficiency and internal heat: often stay up late, overwork, less water may lead to Yin deficiency and internal heat, usually manifested as hot hands and feet, dry mouth and tongue, tongue reddish, no tongue moss, night sweats (abnormal sweating after going to sleep, waking up sweating stops), fever at night and so on. Generally, it can be treated with oral medicines such as Zhi Bai Di Huang Wan and Tian Wang Xin Xin Dan under the guidance of a doctor. 2. External dryness and heat: mostly in spring and fall, caused by external dryness and heat, usually manifested as dry throat, dry mouth, dry nose, dry lips, with or without fever, coughing phlegm is usually dry phlegm. Generally, you can follow the doctor’s instructions to take maitake oral liquid, sasanqua maitake soup, mulberry apricot soup and other medications. 3. Scarcity of fluid in the body: usually drink less water, and because of some reasons lead to the loss of water in the body, thus appearing dry mouth and tongue and other symptoms. Generally under the guidance of the doctor oral fluid soup and other drugs to treat. Note that if a lot of exercise, excessive sweating and other circumstances lead to dry mouth, can be relieved by appropriate, many times to drink water, not a one-time large amount of water. In addition, if drinking water can not be relieved, or accompanied by other obvious symptoms of discomfort, you need to consult a doctor in a timely manner, do not blindly take medication.