The baby spit up considerations and feeding posture related, may also be the emergence of indigestion, acute gastroenteritis and other diseases. 1. Feeding posture, if the usual breastfeeding process often lying down to feed or milk out of the speed too fast, the baby can not swallow in time, there may be a large mouth spit up symptoms. 2. Indigestion, if you feed your baby too much at once, the baby’s gastrointestinal capacity is relatively small, and indigestion may produce symptoms of macrosomia. 3. Acute gastroenteritis, if the baby has acute gastroenteritis, intestinal flora imbalance, digestion and absorption capacity decline, may appear vomiting symptoms. Normally, you should observe your baby’s physical condition more often, if often spit up, it is best to actively seek medical attention.