The white layer on the baby’s tongue may be due to physiological and pathological factors. Physiological factors are normal and should not be a cause for concern. Pathological factors include internal cold and dampness, external cold and dampness, and food accumulation. Parents need to take their babies to the hospital in time to determine the cause and treat the cause. Common causes and treatment a. Physiological reasons if the baby ate certain foods or drugs, such as just after eating milk, tofu, etc., the tongue colored, may produce the phenomenon of white tongue, this is a normal situation, no need to worry, no need to use drugs, water rinse mouth or use cotton swabs dipped in water to scrape away. Second, the pathological reasons 1, cold damp endogenous: children’s tongue white moss is mostly cold damp, due to the weakness of the spleen and stomach, spleen transport function dysfunction, resulting in water metabolism imbalance, thus producing cold damp. Generally speaking, the internal organs of children are delicate, it is not recommended to apply drug therapy, can be massaged Hua Tuo Chi point, pediatric massage and other physical techniques to relieve symptoms; 2, external cold and damp: children due to external wind and cold or living in a humid and cold environment, may lead to external cold and damp, the symptoms of white tongue coating. Should be dealt with in a timely manner, try to avoid living in a cold and shady environment. Usually more sunshine, eat more nutritious food, such as meat, eggs, etc. to strengthen the body and improve the symptoms of cold and damp; 3, food: children with weak spleen and stomach, prone to food accumulation, the symptoms of white tongue coating. At this time the child can be under the guidance of the doctor oral pro-gastric power drugs and digestive drugs, such as Mosapride citrate tablets, yeast tablets, stomach and appetite tablets, etc. for treatment. In daily life, eat less food that is easy to cause bloating and indigestible, such as glutinous rice, chestnuts, sweet potatoes, etc. Eat regularly, three meals a day at regular intervals, and avoid overeating.