For younger children, spitting up is normal, not because they have eaten too much. Especially after the full moon, by the age of 3 months, spitting up can easily occur, and some children spit up so much that they even spurt out of their nose, and parents become more nervous. Of course, when a child spits up milk, parents should quickly put the child in a prone position or stand up, at least in a side-lying position, to avoid accidental sucking. At this time, the amount of milk the child eats suddenly increases, its digestive system is not yet well developed, the stomach suddenly retains too much milk, after the child eats, parents do not pay attention to its hold up and pat the back, it is easy to spit up, this situation when the child is older, generally more than 3 months later will be better. Some children are hungry for a long time, and when they suddenly eat a lot for a short period of time, and eat in a hurry, and swallow too much air, they will easily vomit. Some children cry while eating and sobbing and swallow a lot of air, which can also cause vomiting. If your child spits up milk, is not in good spirits or spits up too often, and is accompanied by fever, crying and restlessness, or if your child is always bowed over, you must go to the hospital to rule out acute abdomen, acute gastroenteritis, intracranial infection, and other related diseases.