The yellowing of the baby’s tongue is considered to be related to dietary habits, and it may also be triggered by indigestion, colds and other factors. 1. Dietary habits, if you often let your baby eat more colorful food, it may lead to the yellowing of the baby’s tongue. 2. Indigestion, if the baby has indigestion, digestion and absorption is affected, gastroesophageal reflux, may stimulate the tongue, so there will be yellow tongue symptoms. 3. Colds, some babies with colds may have yellow tongue coating due to the growth of bacteria, viruses or other pathogens and increased secretions. Usually need to observe the baby’s physical condition, if there is obvious yellowing of the tongue, it is recommended to consult a doctor in time for examination and treatment.