The common reasons for babies to spit up include poor breastfeeding posture, gastrointestinal dysfunction and so on. 1. Poor breastfeeding posture: the infant breastfeeding process is not correct breastfeeding posture, milk secretion, breastfeeding into the stomach a large amount of gas, when the body position changes, easy to cause ripple milk, breast milk in the stomach and digestive juices react to the formation of milk flaps. When breastfeeding, let the baby completely contain the nipple areola, and after breastfeeding, you have to stand up and take a burp. 2. Gastrointestinal dysfunction: If the baby’s abdomen is cold, indigestion, slow intestinal peristalsis, etc., resulting in the accumulation of milk in the stomach, the symptoms continue to aggravate, the situation of spitting milk petals. Babies who often spit up milk flaps, try to take the child to the hospital to check the specific cause, if necessary, medication.