In general, baby vomiting is not caused by simple cold, the main reasons for baby vomiting include the following. I. Physiological structure reasons 1. The stomach of newborns is horizontal. The stomach of newborns does not hang down like that of older children and adults, but is horizontal. This makes the capacity of the stomach smaller and stores less food. 2. The (exit) pyloric sphincter of the stomach is well developed, while the (entrance) cardia sphincter is poorly developed, so it is easy for food to break through the door, resulting in spitting up. 3, these physiological spitting up, and so on the baby grows up a bit, the stomach pendulous down, intestinal peristalsis of neural regulation and endocrine gastric acid and proteolytic enzyme function gradually enhanced, spitting up symptoms will gradually ease. Second, improper feeding 1, to the newborn baby too much to eat, or improper position resulting in vomiting; 2, newborn baby just after drinking milk crying, coughing, moving too much will also lead to vomiting; 3, newborn baby feeding process, due to the mother’s milk is particularly adequate, the baby swallowed uncoordinated caused by too late to swallow; 4, generally speaking, the baby from half a month old began to spit up, generally in two months old when the most serious, three months later After three months, the number of spitting up will slowly decrease, and after the baby is half a year old, the spitting up phenomenon will be significantly reduced. 1.Medical diseases: gastrointestinal reaction to drugs, gastroesophageal reflux, cardia relaxation or spasm, constipation, infection, etc. may cause vomiting. 2. Surgical diseases: esophageal atresia, esophagotracheal fistula, esophageal hiatal hernia, hypertrophic pyloric stenosis, gastric torsion, diaphragmatic hernia, congenital megacolon, anal stenosis or atresia can also cause vomiting in newborns. Parents should help their babies clean up when they vomit. If the milk suddenly reverses from the esophagus to the throat, the baby just happens to inhale and accidentally enters the trachea, which is called choking. When the amount is large, it will cause blockage of the trachea and poor breathing, which can even be life-threatening. If the amount is small, it can be inhaled directly into the lungs and cause aspiration pneumonia. For minor spills and vomiting, babies usually adjust their breathing and swallowing actions on their own, so there is no risk of aspiration, and parents only need to closely observe their breathing and skin color. If the vomiting is only caused by cold, you can pay attention to keeping the abdomen warm and eating warm liquid food with small and frequent meals, which will slowly ease after adjustment.