Thick white tongue coating in children can be caused by a variety of reasons, with food stagnation (indigestion of food and its accumulation in the stomach) not being transformed more often, and can also be seen in phlegm-dampness caused by a deficiency of the spleen, and so on. Tongue coating is a layer of moss scattered on the surface of the tongue, for the stomach qi upward fumigation of the stomach food turbidity, etc., cohesion stopped on the tongue surface and become. Normal tongue coating is thin, white and even. Children’s diet is not appropriate, easy to diet stagnation. If the diet stagnation is not transformed, fumigation coagulation in the tongue, can lead to thick white tongue coating. In addition, if the spleen is deficient in fluid loss, cohesion and dampness, dampness and turbidity can also be seen in thick white tongue coating. Children with white tongue coating can also be seen in the spleen and lung qi deficiency, dampness and phlegm, phlegm and dampness blockage. Specific causes should be combined with the actual situation of comprehensive judgment and analysis, in order to clarify the cause of the disease, timely and accurate conditioning treatment. It is recommended to consult a doctor in time in order to avoid delaying the condition.