Baby spitting up can be seen in physiological phenomena, pathological conditions such as gastrointestinal dysfunction, etc., need to be combined with the baby’s specific situation to determine. 1. Physiological phenomenon: For younger babies, as the stomach is horizontal and the esophagus and cardia sphincter function is immature, it is easy to spit up after feeding, which is a normal physiological phenomenon, and the above phenomenon can be relieved gradually with the increase of age. 2. Condition (1) Gastrointestinal dysfunction: If the baby eats more and the digestive tract can not tolerate it, the above phenomenon can also occur, which can be seen in more frequent spitting up, and some of them may have vomiting. (2) respiratory tract infections: such as acute bronchitis, the baby clinical symptoms of coughing, when the cough is more intense, spitting up symptoms, need to actively treat the original disease. (3) Other: such as improper feeding, when the breastfeeding is too fast, too urgent, the baby may appear the above phenomenon, some may choke, need to pay attention to the feeding mode. It is recommended to consult a specialist for evaluation if necessary.