Three months baby tongue yellow, mostly due to the digestive system caused by the following reasons: 1, the baby is too small, the digestive system is not yet well developed, digestion is weak, prone to gastrointestinal disorders and caused by the tongue yellow. 2, indigestion, food accumulation can also cause the tongue yellow, due to the parents of the improper way of feeding, such as feeding the amount of milk is too large or feeding too often, are leading to the baby’s tongue caused by accumulation of food The yellowing of the tongue is caused by the accumulation of food in the baby. It is also possible that the breastfeeding mother ate fried, spicy food caused by the baby on fire, drink milk powder baby, milk powder brewing concentration is too high, is also caused by the baby food accumulation, tongue yellowing reasons. 3, the baby’s spleen and stomach is weak, can also cause tongue yellowing, suggest that the parents of the baby between meals, gently massage the baby’s abdomen clockwise, can play a role in strengthening the spleen and eliminate the role of food.