Dry mouth and tongue, according to the corresponding accompanying symptoms, can be divided into stomach fire blazing, liver and gallbladder dampness and heat, lung yin deficiency, kidney yin deficiency, etc., can be used to identify the use of Huanglian Qingstomach Pill, gentian diarrhea liver pills, Sha Shen Maidong Tang, Zhi Bo Di Huang Pill, etc., the specific use of medication, please follow the doctor’s instructions. 1. Stomach fire is blazing: with symptoms such as easy to hunger, mouth and tongue sores, dry stools, etc., we can use Huanglian Qingstomach Pill and other formulas to clear the stomach and remove the fire. The adverse effects of Huanglian Qinggong Pill are not clear; pregnant women should avoid using it; avoid cold, spicy and greasy food. 2. Dampness and heat of liver and gallbladder: with bitter mouth and sticky mucus, red eyes and tinnitus, distension and pain in the abdomen and ribs, sticky stools, and yellow urine, etc., Longdian Diarrhea Liver Pill can be used to clear the liver and gallbladder and promote dampness and heat. The adverse reactions and contraindications of Longdian Diarrhea Pill are not clear; attention: pregnant women, old and weak, loose stools, avoid spicy and stimulating food. 3. Lung Yin deficiency: accompanied by dry cough, little sputum, hot flashes (a burst of fever), etc., can be used with prescriptions such as Sha Shen Maidong Tang to clear and nourish the lungs and stomach. Note that Sha Shen should not be taken with quinoa. 4. Kidney yin deficiency: accompanied by soreness and weakness of the waist and knees, hot flashes and night sweating (sweating abnormally after going to sleep and stopping after waking up), and heat in the hands, feet and heart, etc. Formulas such as Zhi Bai Di Huang Wan can be used to nourish yin and reduce fire. Adverse effects and contraindications of Zhi Bai Di Huang Wan are not known; Note: Caution should be exercised in pregnant women, and not suitable for patients with deficiency coldness (which is manifested by fear of coldness, cold hands and feet, and a preference for hot beverages). If there is any discomfort, please go to the hospital and use the medicine under doctor’s guidance.