If a newborn baby has a cough and spits up milk, it is important to take the child to the hospital for a specific examination to find out the cause of the child’s cough. Because the newborn’s digestive system, especially the esophagus is shorter and the stomach is more horizontal, once the cough occurs, the abdominal pressure increases, it is easy to spit up the phenomenon. Most of the coughs are caused by respiratory infections in newborns. If the infection is in the upper respiratory tract, i.e., inflammation of the throat, oral medication can be given to the child. If the infection occurs in the lower respiratory tract, such as bronchitis or pneumonia, it is recommended to hospitalize the child for treatment, otherwise it is very dangerous. During the hospitalization, depending on the type of infection, appropriate antibiotics or antiviral drugs should be selected for intravenous drip treatment.