The jerk tongue reaction is an unconditioned reflex that occurs during infancy and early childhood, and is an innate reaction that is usually found four months after birth, and is manifested by pushing out solid food that enters the mouth to avoid foreign bodies entering the throat or trachea, causing choking or choking and other accidents. The jerking tongue reaction usually starts to disappear around 6-8 months after birth, and clinically most of them think that the jerking tongue reaction disappears, that is, they can consider feeding semi-liquid or solid supplementary food, such as rice soup, crushed noodles, puree, etc. If the jerking tongue reaction still does not disappear after more than eight months, in this case, they need to go to the hospital in time, and may have congenital developmental abnormalities.