Tongue moss has the function of protecting the tongue surface, reflecting the body’s yin and yang and disease conditions, so it is not recommended to scrape the tongue moss. Tongue moss is a layer of moss on the surface of the tongue, according to Chinese medicine, tongue moss can reflect the body’s gastric qi is sufficient, yin and yang situation, fluid deficiency, etc., so that you can make a judgment on the disease, if you scrape the tongue moss may affect the diagnosis of the disease. In addition, tongue coating can also play a role in protecting the tongue, so it is not recommended to scrape the tongue coating, only need to use a toothbrush to clean properly when brushing teeth. If you feel that the tongue is thick and greasy or have other uncomfortable symptoms, you can go to the regular hospital to see the doctor under the guidance of the adjustment.