Pneumonia in newborns may be caused by inhalation factors, infectious factors, and other triggering factors. 1. Inhalation factors: fetal feces, amniotic fluid, milk, etc. may be inhaled, as newborns can be caused by immature swallowing reflexes, uncoordinated movements, resulting in gastroesophageal reflux, etc., and these irritating fluids or congenital defects can lead to newborns suffering from pneumonia. 2. Infectious factors: most of them are due to pathogenic bacteria in the surrounding environment, the resistance of newborns is weak, if there is a cold virus around, it is easy to cause respiratory tract infections, which can lead to pneumonia in newborns. 3. Other triggering factors: newborns born with malnutrition, anemia and congenital heart disease can lead to the body’s resistance and immunity to reduce the newborn’s pneumonia. If a newborn suffers from pneumonia, it is recommended to consult a doctor in time to identify the cause of the disease and make appropriate treatment.