The reasons for the occurrence of map tongue are not very clear. It is thought to be related to the underdeveloped nervous system and mood swings in children; in general, map tongue is mostly seen in children, especially in infants and young children who are weak. The map tongue generally has no obvious conscious symptoms and has little effect on the rest of the body, and the problem of an upset stomach is not clearly associated with the map tongue. The treatment of map tongue depends on whether there are causes, such as dental disease is not treated, oral infection, poor mental state, physical weakness, lack of certain elements, gastrointestinal tract dysfunction, etc., if you can find the cause, the cause of treatment is the most effective. Secondly, it is important to have a balanced diet without partiality, to enhance physical fitness and to do a good job of oral cleaning.