Thick tongue can be scraped, but this method only treats the symptoms but not the root cause, and cannot solve the problem at the root. According to the basic theory of Chinese medicine, thick tongue coating is mostly considered to be caused by excessive phlegm-dampness or food stagnation. The best treatment is to take oral medications to warm phlegm and dampness and eliminate food stagnation, such as Bao He Wan and Er Chen Wan, in order to treat and regulate the problem at root. In addition, thick tongue coating can also diagnose and determine the location of the disease, which is mainly seen in the internal evidence or internal organs, and can be treated with oral medication to regulate the malfunction of internal organs. The specific treatment is best to see a doctor and take oral medication under the guidance of the doctor to solve the problem at its root.