A baby’s tongue sticking out from birth may be a physiological phenomenon, or it may be a pathological phenomenon such as oral infection or congenital stupidity. 1. Physiological factors: from zero to one year old, babies are in the period of micturition and often explore the outside world through their tongues, so babies will express their curiosity about the outside world by sticking out their tongues. 2. Oral infection: when the baby’s oral mucosa has ulceration and pain, the tongue will also be sticking out. At this time, parents need to observe carefully, and some of the babies will have fever, salivation (drooling) and other symptoms at the same time. 3. congenital stupidity: congenital stupidity of the baby manifested as often spit out the tongue, accompanied by other symptoms. The diagnosis can be confirmed by chromosome testing, for example, special facial features. If your baby’s tongue has been sticking out since birth, or if there are other reasons, it is recommended that you consult a doctor in time to find the cause and treat it.