Normal full-term infants can show symptoms of vomiting in the first 1-2 days after birth, and the vomit is foamy clear amniotic fluid or coffee-colored material, which belongs to the gagging syndrome. Physiological vomiting (i.e., a small amount of milk flowing from the side of the mouth after eating milk) is a common phenomenon in newborns with sufficient breast milk. Young parents carefully observe when and how vomiting occurs, the nature of the vomit and its complications to help in the early diagnosis of diseases (especially congenital digestive tract abnormalities). Generally speaking, newborns vomit after birth with choking and coughing, bruising, suggesting congenital esophageal atresia; vomiting and difficulty in inspiration soon after birth should be considered as neonatal diaphragmatic hernia; improper feeding methods such as too much milk, too fast or horizontal lying feeding, so that a large amount of air enters the lungs, is also the main cause of neonatal vomiting; vomiting starts 3-5 days after birth, with bile and fecal matter in the vomit, without fetal stool If the vomiting starts 3-5 days after birth, with bile and feces in the vomit and no or very little fetal stool, congenital megacolon should be considered; vomiting occurs when lying down after feeding and is relieved when standing up, gastroesophageal reflux can be diagnosed; jet vomiting occurs 2 weeks after birth, and the vomit contains gastric juice and milk lumps, and a hard mass the size of an olive is felt in the right upper abdomen, congenital hypertrophic pyloric stenosis can be diagnosed; vomiting with diarrhea and fever in newborns is mostly seen in acute gastroenteritis; vomiting with light cough, runny nose and Vomiting with light cough, runny nose and shortness of breath indicates a whistling infection (cold and pneumonia); vomiting in the form of jets and more than 10 times a day with cerebral screaming, twitching and bulging fontanelle can be diagnosed as intracranial disease, mostly due to various encephalitis or meningitis and intracranial hemorrhage. If vomit is ejected from the newborn’s mouth and nose at the same time, it can easily cause asphyxia and even death. Therefore, when the newborn vomits to prevent the vomit choked into the airway. The specific method is: let the child lie prone, face down and gently pat the back, conducive to vomiting flow to the outside of the mouth; vomiting and then let the child lie on the right side, and prohibit breastfeeding, wash the face with hot water, wipe away the residual vomit around the mouth and nose cavity; breastfeeding or artificial feeding, should take a sloping position, sucking more Mongolian infants to sucking stop, gently pat the back after each feeding. For pathological vomiting should be sent to a regular hospital in a timely manner, once the diagnosis of congenital gastrointestinal malformation, should be surgical eradication as soon as possible.