Children’s tongue white moss thick may be physiological phenomenon, may also be candida infection, indigestion and so on. 1. Physiological phenomenon: children do not pay attention to oral hygiene, especially after eating milk powder, it is easy to appear tongue white moss thick situation. 2. Candida infection: Candida is a conditionally pathogenic bacteria, and if Candida multiplies on the tongue, it may cause the symptoms of white moss on the tongue. It is not easy to wipe away the white coating of the tongue, and similar white adherents may appear around the mouth. 3. Indigestion: When children suffer from indigestion, the salivary glands do not secrete enough, which leads to a decrease in the ability of the mouth to clean itself, and the appearance of a thick tongue with white moss. This is often accompanied by a change in bowel movements and a decrease in appetite. There are other reasons for children’s thick tongue, it is recommended to strengthen oral care, if necessary, seek medical treatment to find the cause, if abnormal, actively cooperate with the doctor treatment.