Dry mouth and tongue at night, excluding physiological reasons, Chinese medicine is considered to be the body’s fluid damage, resulting in fluid can not be carried up to the mouth and lead to, most often seen in the dry evidence, heat evidence, you can take nourishing yin and clearing heat (nourishing yin essence, clearing the heat of the evil) of traditional Chinese medicine to regulate. For example, you can take Zhi Bai Di Huang Wan, Dajian Yin Wan and other Chinese medicines to regulate. Chinese medicine believes that dry mouth and tongue is caused by the lack of body fluid, the patient may also be accompanied by red face, heat, sweating and other manifestations, this is due to the lack of fluid, yin can not control the yang, resulting in yang qi hyperactivity, heat within the birth of the deficiency, clinically nourishing yin and moistening dryness (nourishing yin essence, clearing the heat) as the basic rule of treatment. 1. Zhi Bai Di Huang Wan (知柏地黄丸) is composed of Zhi Mu (知母), Huang Bai (黄柏), Shu Di Huang (熟地黄), and Cornus officinalis (山茱萸). It has the efficacy of nourishing yin and lowering fire (nourishing yin essence and lowering fire). It is used in treating yin deficiency and fire (deficiency of yin essence in the body, resulting in hyperactive fire), hot flashes (a burst of fever), night sweating (abnormal sweating after going to sleep, but sweating stops after waking up), and dry mouth and sore throat. Caution should be exercised in cases of Qi deficiency fever and solid heat. 2. Da Tian Yin Pill, composed of Radix Rehmanniae Praeparata, Rhizoma Zizoma Polygonati Odorati, Rhizoma Polygonati Odorati, and Rhizoma Polygonati. It has the effect of nourishing yin and reducing fire. It is used in treating yin deficiency and fire exuberance, hot flashes and night sweating, coughing and hemoptysis, tinnitus and spermatorrhea. If you feel unwell, please go to a professional hospital in time, do not self-medicate, so as not to delay the best treatment period of the disease.