A coated tongue is called thick moss in Chinese medicine. Depending on the cause of the disease, it can be regulated by medication and acupuncture. 1. Phlegm and Drink: This refers to the disease caused by abnormal transportation of water in the body, where the originally flowing water stays and accumulates in the spleen and stomach, and is called phlegm and drink. Doctors will formulate appropriate treatment plans according to the specific causes of the disease. For example, if the spleen is weak in yang, Ling Gui Zhu Gan Tang can be used to warm the spleen and resolve the phlegm. In daily life, beef and mutton can be consumed to warm up the spleen yang. 2. Accumulation of food: This is a disease caused by physical weakness and dietary irregularities, etc. Acupuncture can be performed on acupuncture points such as the middle epigastric region, the heavenly pivot, the foot Sanli, and the upper Juhu, etc., so as to achieve the efficacy of strengthening the spleen and benefiting the qi, eliminating food and resolving accumulation of food. When the qi of the spleen and stomach are smooth and transported as usual, they can digest food and drink normally. When the patient has the symptom of having a coated tongue, the cause of the coated tongue should be identified under the guidance of the doctor, and then adjusted according to the cause.