Babies with black tongues are usually considered to be caused by food staining, high fever or organic diseases, etc. They need to go to the hospital to clarify the specific causes and then undergo targeted treatment. Common causes and treatment methods 1, food staining: If the baby ate chocolate, mulberry and other dark and easily stained food, the tongue will be stained black by food. You only need to brush your teeth and rinse your mouth to restore normal, no need to worry too much; 2, high fever: the baby is in a high fever state, fever leads to the body’s fluid depletion, there will be symptoms of tongue black, you need to use physical cooling or take acetaminophen and other drugs under the guidance of the doctor as soon as possible to reduce fever, the body will recover the color of the tongue will also be restored; 3, gastrointestinal tract dysfunction: because the baby’s gastrointestinal tract function is not fully developed, it can lead to bloating and indigestion after eating too much. If too much food accumulates in the intestinal tract, it may lead to a black tongue. Probiotics can be given to the child appropriately to relieve the problem of indigestion; 4. Organic diseases: diseases such as congenital heart disease can have the symptom of a blue tongue, which looks like a blackened tongue. Parents need to take the baby to the hospital as soon as possible to identify the cause, if it is congenital heart disease can be interventional or surgical treatment, do not delay the disease. Note parents should ensure that the baby’s oral cavity is clean and do not give the baby drugs indiscriminately. Give the baby more light and easy to digest supplementary food in the daily diet.