Dry tongue is usually caused by physiologic factors, improper diet, dry syndrome, and lingual inflammation. It can be treated by self-adjustment or taking medicines such as Domperidone tablets, Paeonia lactiflora capsules and vitamin B2. 1. Physiological factors: Long-term emotional instability, irregular work and rest or insufficient water intake can lead to dry tongue. Suggest self-adjustment of emotions, regular work and rest, drink more water, and develop good habits. 2. Improper diet: Eating high oil, high fat or spicy food can lead to dry tongue, accompanied by loss of appetite and nausea and other symptoms. It can be treated by taking drugs such as domperidone tablets and mosapride tablets as prescribed by the doctor. 3. Dry syndrome: due to autoimmune dysfunction, viral infections and other reasons, causing the occurrence of dry syndrome. You can drink more water, keep oral hygiene, use white peony total glycoside capsule, hydroxychloroquine tablets and other drugs to relieve. 4. Tongue inflammation: Due to gastrointestinal diseases, lack of nutrients and other causes of oral mucosal pathology damage, occurrence of tongue inflammation, may appear dry tongue phenomenon. It is necessary to treat the systemic disease for the cause, you can take vitamin B2, zinc gluconate oral solution and so on. If the symptoms of dry tongue patients, should promptly seek medical attention, under the guidance of the doctor’s treatment, drugs should also be used in accordance with the doctor’s instructions.