Children’s tongue thick white, mainly consider the following conditions: milk scale, indigestion, etc.. 1. milk scale: baby oral saliva secretion is less, can not self-cleaning, long time drinking milk will lead to the tongue appear tongue coating thick white, this is a normal phenomenon. Generally in the baby after 4 months, the salivary glands and digestive enzymes will gradually increase, tongue coating will slowly disappear. 2. indigestion: the baby’s digestive system is not yet mature, digestive enzyme secretion is less, lower vitality, difficult to adapt to the larger changes in food, very easy to indigestion, appear tongue coating thick white. Children’s tongue thick white, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, give targeted treatment or treatment.