The baby’s white tongue may be related to oral unhygiene, indigestion, thrush, etc. The specific analysis is as follows: 1. Oral hygiene: the baby’s tongue coating white may be caused by oral hygiene, after eating milk without cleaning, the tongue coating may appear white layer. 2. Indigestion: Indigestion may cause the tongue to become white and thick, usually accompanied by bloating, poor appetite and other symptoms. 3. Thrush: A baby with thrush will also show a whitish tongue coating, which is not easy to wipe off and needs to be treated in a timely manner. The baby’s tongue may be white and other reasons are also related, it is recommended to go to the hospital in time for relevant examinations, clear cause and symptomatic treatment.