Babies who keep throwing up may have physiologic factors such as improper feeding. It may also be physiological factors, such as gastrointestinal obstruction, infectious diseases, central nervous system diseases. Need to identify the cause, timely treatment and treatment. 1. Improper feeding: feeding too fast, too much, or when the baby cries, feeding, feeding medicine, or not burping after feeding, etc. will cause the baby has been vomiting. Breastfeeding should be small and frequent meals, burping after feeding can be relieved. 2. Gastrointestinal obstruction: congenital gastrointestinal malformations such as esophageal atresia, pyloric spasm, etc., acquired gastrointestinal obstruction, such as acute intussusception, can cause babies to vomit all the time. 3. Infectious diseases: such as upper respiratory tract infection, pneumonia, etc., vomiting symptoms are more common. 4. central nervous system diseases: such as encephalitis, craniocerebral injury, all have vomiting symptoms. If your baby keeps vomiting, you should seek medical attention to identify the cause and treat it as soon as possible to avoid aggravating the condition.