White tongue coating may be a normal phenomenon, or it may be caused by surface evidence, cold evidence, dampness evidence, etc. According to different situations, you can usually choose cold and flu clearing heat granules, Shuanghuanglian, Lizhong Pill, Ginseng Ling Baijusan and other drugs to regulate. 1. Normal phenomenon: usually manifested as white and thin tongue coating, in addition to the white tongue coating, the body has no other uncomfortable symptoms, generally do not need any intervention. 2. Epiphenomenon: the so-called epiphenomenon includes wind-cold, wind-heat cold, etc., which is characterized by white and thin tongue coating, conscious fear of cold and fever, and accompanied by nasal congestion, runny nose, nasal sound when speaking, dry and itchy throat or pain and other symptoms. Usually, Cold and Heat Granules can be used to treat wind-cold and cold, and Shuanghuanglian can be used to treat wind-heat cold. 3. Cold syndrome: In addition to white tongue, patients with lung cold may also have symptoms of severe cough and white sputum. If the patient is suffering from lung cold, Tongxuanliang Pill can be taken under the guidance of a doctor. If the patient is a deficiency cold syndrome cold, can be taken under the guidance of the doctor Li Zhong Pill, Liang Pian Pill and so on. 4. Dampness: usually manifested as white and thick tongue coating, cough and phlegm, light texture, and accompanied by chest tightness, dizziness, nausea and other symptoms. Can be taken under the guidance of the doctor, such as Er Chen Pill, Chen Xia Liu Jun Pill. There are many other reasons for patients to have white tongue coating, it is recommended to comprehensively determine the patient’s physical condition, the doctor to identify the evidence of the treatment, and should not be unauthorized use of medication, so as not to cause adverse consequences to the body.