Thick and greasy tongue usually does not go away on its own, and needs to be regulated or treated with medicine to remove it. Thick and greasy tongue is usually caused by dampness and heat in the spleen. Damp-heat caused by a deficiency in the spleen prevents the body’s qi, blood and fluids from functioning properly, resulting in a thick, greasy tongue moss and a yellow color due to the heat. Therefore, if the damp-heat in the spleen is not regulated, the thick and greasy tongue moss will not be eliminated on its own. The causes of spleen deficiency include excessive consumption of cold, raw and stimulating foods, smoking and drinking, staying up too late, and blood flow. In addition, in addition to a greasy tongue, patients with spleen and stomach disorders may also have a yellowish complexion, fullness after meals, a bitter mouth and dry throat, and sticky stools. Therefore, in order to eliminate the thick and greasy tongue, patients can take some Chinese medicine to clear heat and dampness and strengthen the spleen, and it is recommended to take one or two courses of treatment. If the situation is more serious, it is recommended to go to a Chinese medicine hospital for examination and treatment in time. After the occurrence of thick and greasy tongue, patients should try to avoid spicy and greasy food, and eat more foods that remove dampness, such as barley, red beans, winter melon, etc.