The reasons why babies vomit after eating milk are as follows: 1, children suffer from gastrointestinal dysfunction, after the baby suffers from gastrointestinal dysfunction often appear digestive discomfort, such as abdominal pain, diarrhea and even vomiting, at this time children’s gastrointestinal tract peristalsis is disturbed, to the baby after eating milk will often appear the consequences of vomiting, you can give children appropriate application of bifidobacteria and other probiotics to regulate. 2, due to children suffering from acute gastritis caused by bacterial infection, this time will also cause vomiting after eating milk. The symptoms are caused by acute gastritis, which is caused by bacterial infection after the child has eaten something unclean, and this time will also cause vomiting after eating milk, the degree of vomiting is often heavy, and even accompanied by fever. 3, the symptoms are caused by children suffering from digestive tract abnormalities, if the child suffers from gastric torsion or has congenital pyloric obstruction, it will also cause vomiting after eating milk. Spitting up of milk.