Newborn dry vomiting and vomiting milk for the following reasons: 1, physiological reasons: newborn dry vomiting, vomiting milk, consider the physiological characteristics of the baby’s stomach caused by the newborn’s stomach is mostly horizontal, the entrance of the stomach cardia and exit pylorus almost at the same level, the connection between the stomach and esophagus cardia is not well developed, more relaxed, and small stomach capacity, if the newborn is too full, the milk in the stomach will be from the relaxed cardia 2, other reasons: consider drinking milk powder baby pacifier hole is not suitable, some large, resulting in milk outflow too fast, or eating breast milk children baby mother milk outflow too fast, the above two situations will make the newborn in the process of eating milk too fast, due to swallowing too fast, will swallow a lot of air in the stomach, air in the stomach upward movement In the process of upward movement of air in the stomach, milk will be squeezed into the esophagus, and dry vomiting and vomiting can occur.