Occasional projectile spitting up in infants may belong to physiological reasons such as eating too fast or pathological reasons such as pyloric obstruction, and most cases are not serious. Because infants are young, their stomach volume is correspondingly small. If the baby eats too fast or swallows too much gas when eating breast milk or formula, the normal physiological phenomenon of occasional jet spitting up will occur. At this time, parents should pay attention to the child’s feeding method, try to avoid the child to eat too fast, in addition to the baby after eating gently pat the baby’s back, can play to relieve the phenomenon of baby spit up. If the baby has pancreatic failure, pyloric obstruction and other diseases, it can also lead to the baby’s jet spitting up. Therefore, if your baby has frequent episodes of projectile spitting up, you should go to the hospital in time for appropriate examination and treatment.