The tongue of a normal baby is white. If a three-month-old baby has a yellow tongue, it may be related to jaundice or digestive disorders. Treatment is based on the cause of the yellow tongue. Common causes and treatment 1, jaundice: In addition to yellow tongue, it can also be accompanied by yellowing of the skin mucosa, and even sclera yellowing. We need to observe the baby’s spirit and milk eating condition first. If the baby’s milk eating and sleeping are not significantly different from normal children of the same age, it can be considered physiological jaundice. No special treatment is usually needed. However, if the jaundice is accompanied by eczema, fever, vomiting and other manifestations, the jaundice can be caused by pathological factors, and it is necessary to promptly identify the cause and carry out light therapy under the guidance of a professional doctor or take the appropriate medication. 2. Digestive system diseases: it can be caused by accumulation of food, fire, indigestion, etc. In addition to yellow tongue, it is accompanied by loss of appetite, vomiting, bloating, diarrhea and other symptoms. In this case, parents need to hydrate the baby properly. If the baby is breastfed, the mother needs to improve the diet structure, try to eat lightly and avoid foods such as chili and fried chicken. If the baby is formula-fed, change the formula in time to avoid aggravating the symptoms of fire. At the same time, probiotics can be given to the infant as prescribed by the doctor to improve the yellowing of the tongue. Parents need to pay attention to the infant’s feeding style, should try to eat less and more meals, to avoid indigestion, accumulation of food and other symptoms. And do not give your baby medication without permission to avoid adverse consequences.