Newborn babies always vomit, common causes: 1, a large amount of amniotic fluid inhalation has a certain stimulation of the gastric mucosa, newborn babies soon after birth that vomit, vomit clear water, mucus, milk will also be accompanied by milk after eating, serious will have a small amount of bloody liquid, coffee-colored liquid vomiting. If the general situation is good, you can use gastric lavage to treat frequent vomiting babies, generally after gastric lavage amniotic fluid no longer vomit. 2, the baby’s own stomach is horizontal, the capacity is relatively small, and the esophageal connection of the cardia is wide, the role of closure is poor, the baby often swallowed air when eating milk, in the baby lying position, the milk is easy to back up into the mouth caused by vomiting. Some babies will stop spitting up at 3-4 months, while others will stop spitting up at 5-6 months. If the spitting up gets worse or is very strong, the baby needs to be seen by a doctor.