There are many clinical diseases that can cause white tongue in children, some are normal physiological state, while some are pathological state, the former is normal and will disappear slowly by itself, the latter needs treatment. The tongue is one of the main diagnostic tools in Chinese medicine, the white tongue is mostly seen in children with weak spleen and stomach, when eating too much food causes accumulation of food or indigestion, the tongue will appear white, these children will also have the accompanying symptoms of belching and sour smell, can be alleviated by improving the diet, eat less meat and poorly digested food, children who are not weaned can choose to eat milk powder regularly and quantitatively, supplemental food should not be added too much If the symptoms of accumulation of food do not ease, you can try to do pediatric massage to relieve the symptoms. In addition, cold can also cause white tongue, but this white color is mainly light white, but also accompanied by cold limbs and hands and feet are not warm, as long as good warmth symptoms will gradually ease. Lastly, babies and children who are not weaned and who mainly eat formula milk will have residual milk scum on their tongues after drinking milk, which is formed by the precipitation of milk, because babies produce less saliva and cannot drink water, so the white tongue coating is thicker and is a normal physiological condition. No special treatment is needed.