White, thick and greasy moss is mostly due to internal stagnation of dampness and turbidity, or phlegm-beverage, accumulation of food (indigestion of food and its accumulation in the stomach), etc. White thick moss may appear when there is dampness-heat within the tongue, excessive fire in the heart with excessive dampness, or when there is weakness of the spleen and stomach. The white color of the moss on the tongue is called white moss. The white moss is thick and thin, the moss is white and thick, and the body of the tongue cannot be seen through the moss, it is thick white moss. The thinness and thickness of the tongue moss mainly reflect the prevalence of evil and the depth of evil. Thick moss is caused by stomach qi, dampness, phlegm, food, heat and other fumigation, stagnation of the tongue, the main phlegm and dampness, food accumulation, internal heat and other certificates. White moss is thick and greasy, the main phlegm, dampness and heat within; light red tongue white thick accumulation of powder moss, can be seen at the beginning of the warm epidemic or internal carbuncle. Dampness-heat internalization: Dampness-heat internalization can affect the secretion of fluid in the mouth, and at the same time, heat depletes fluid, resulting in insufficient fluid, which can lead to the symptoms of white and thick tongue coating and tongue pain, usually accompanied by sticky and greasy stools, dizziness, and dry and bitter taste in the mouth. Excessive heart fire and excessive dampness: the heart opens the orifices of the tongue, heavy heart fire will be committed to the tongue, if accompanied by heavy dampness, there may be white and thick tongue coating, tongue pain, tongue tip redness, and accompanied by short urine, heavy body sleepiness, sticky stools, dry mouth and other symptoms. Weakness of the spleen and stomach: Weakness of the spleen and stomach can cause weakening of the function of transportation and digestion, the body can not get rid of the water and dampness, and can not be able to transmit fluid to the mouth, resulting in a lack of fluid, which leads to the symptoms of a white thick tongue, which can be accompanied by dullness (lack of appetite, reduced food intake), fatigue and other symptoms. If there is a dry mouth and tongue white moss is very thick and painful, it is recommended that the patient consult a doctor in a timely manner, ask the doctor to clarify the cause of the disease, give targeted treatment.