Frequent pneumonia in newborns may be caused by uncoordinated swallowing movements, congenital developmental defects of the lungs, and improper care. 1. Uncoordinated swallowing: Pneumonia can be triggered by uncoordinated swallowing movements of newborns after birth, swallowing amniotic fluid and meconium during labor, swallowing milk into the lungs during breastfeeding after birth, and inhaling the milk into the lungs by mistake. 2. Congenital developmental defects of the lungs: the lungs of newborns have congenital developmental defects, such as frequent congestion of the pulmonary blood vessels, which can easily induce inflammation and lead to pneumonia. 3. Improper care: newborns have poor immune function after birth, and parents do not take care of them properly, so it is easy for them to catch a cold after being exposed to wind and cold, and they are prone to get pneumonia when they catch a cold. There are many reasons why newborns often get pneumonia, and it is recommended to seek medical treatment in time for serious cases.