If a newborn is spitting out his tongue, the first thing to observe is whether there are oral ulcers, other inflammatory diseases and foreign bodies such as hair and threads in the mouth. This is because when there is an ulcer or pain in the mouth, it is likely to cause the newborn to spit out his or her tongue. You can also look for enlarged tonsils, which are likely to affect the newborn’s tongue movements. If there is no such disease and all other symptoms are normal, it may just be an unconscious movement and it is recommended to continue observation without much effect. However, if the tongue is often spat out as the baby grows older, it is important to go to the hospital for a timely examination to rule out brain abnormalities and other diseases, because some low-energy children are likely to repeat a certain action, which is very much related to mental retardation, and early detection and treatment are necessary.