Children always spit up milk is generally seen in the following cases: First, relatively common is the infancy because the cardia is not well developed, the pylorus is well developed stomach volume is small easy to appear gastroesophageal reflux, the symptoms are not heavy mainly pay attention to the feeding method adjustment, a small number of meals, sleep properly elevated head and neck, shoulders can be. Second, if frequent and violent vomiting after birth, excluding reflux gastroesophagitis, pay attention to whether there is congenital pyloric hypertrophic stenosis, congenital cardia loss retardation, or even esophageal stenosis, you need to see a pediatric surgical consultation for examination and treatment. Third, we also need to pay attention to the presence of food allergies, the most common milk protein allergy or egg allergy, usually for dietary management, avoid allergic food, milk protein allergy can eat deeply hydrolyzed protein milk powder or completely hydrolyzed protein milk powder. Fourth, some children may have lactose intolerance, breast milk and milk contain high amounts of lactose, if there is lactose intolerance will be prone to indigestion, increased gas accumulation in the gastrointestinal tract caused by vomiting, mainly by adding lactase.