There are several reasons why a child chokes on milk: first, the feeding position is not right when feeding, so that the milk into the stomach choked into the respiratory tract. Secondly, when breastfeeding the amount of milk is more sufficient or artificial feeding of the baby bottle hole is larger, the baby is too late to swallow, easy to cause the child choking on milk. Third, because the baby’s stomach is horizontal, the volume of the stomach is relatively small, easy to cause milk reflux, reflux back into the esophagus appeared to spit up, spit up if there is no timely cleanup or the child is crying easily caused by choking. The baby suffers from respiratory infections such as bronchopneumonia when the symptoms of choking on milk, if choking should pay attention to keep the airway open, to avoid causing aspiration pneumonia.