If an infant has a purple tongue and loves to spit it out, it is mainly caused by the following conditions that are being considered. The first one is caused by the child suffering from congenital stupidity. In this case, the infant’s symptoms are mainly caused by an extra chromosome in the child, and this type of child will experience a significant decline in intelligence and is often accompanied by congenital heart disease. If the child has congenital heart disease, it will cause a lack of oxygen in the body, and the child’s tongue will be purple. The child’s low intelligence can also lead to tongue lashing, for which there is no good treatment. Secondly, it is due to the accumulation of heat in the spleen and stomach. If the accumulation of heat in the spleen and stomach is very obvious, the child’s tongue will also be purple and love to spit out the tongue, and the child’s breath smells bad, and the tongue is thick and greasy, and the stools are dry and knotty, in this case, the parents can give the child to apply the rhubarb or scutellaria baicalensis and other medicines to make water to drink.