White tongue should refer to the tongue coating white, can be seen in normal people, usually no need for treatment. If it is a pathological condition, it is mainly caused by surface evidence, cold evidence and dampness evidence, which can be treated by dietary modification and medication. 1. Dietary adjustments: the cause of white tongue coating may be exogenous surface evidence (mainly manifested as respiratory symptoms after feeling external evils), or cold evidence, dampness evidence, so the patient should try to eat a light diet, and eat less cold, greasy, indigestible food. 2. Taking medication: If the patient’s tongue is thin and white and moist, it can be seen in normal people, and generally no treatment is needed. It can also be seen at the beginning of superficial symptoms, or yang deficiency and internal cold, can be taken under the guidance of the doctor, such as ephedra, cinnamon sticks and other relief of the surface of the cold (remove the cold of the surface of the muscle), or dry ginger, cinnamon and other warming Yang, cold medicine. If the patient’s tongue coating is white and thick and greasy, it is mostly due to internal stagnation of dampness and turbidity, or phlegm-drinking (pathological products formed by impaired metabolism of water and fluid), or food accumulation (food stagnation in the stomach due to indigestion of food). Medicines such as Poria, Cangzhu, Chenpi, etc., which remove dampness and dissolve phlegm, or medicines for elimination of food, such as fried maitake, Liushenqu, etc., may be administered under the guidance of a doctor. The above medicines should be used under the supervision of a physician. There may be other reasons for the whiteness of the tongue, and it is recommended that the patient be treated under the guidance of the doctor’s diagnosis, and not blindly use medication to avoid adverse consequences.