Neonatal pneumonia mostly refers to infectious pneumonia in newborns, which is usually caused by prenatal infection, infection during labor and delivery, respiratory infection, and medical infection. 1. Prenatal infection: If the mother is infected with virus, chlamydia, mycoplasma or certain bacteria during pregnancy, the fetus may be attacked, so the newborn may be prone to pneumonia after birth. 2. Infection during labor and delivery: If the mother has premature rupture of amniotic membrane, prolongation of labor and delivery, the fetus gulps down contaminated amniotic fluid, etc., it is also easy to cause lung infections, which may lead to neonatal pneumonia. 3. Respiratory tract infection: newborns may come into contact with pathogens after birth, leading to respiratory tract infection, which in turn causes neonatal pneumonia. 4. Medical infections: If the hospital is not sterilized properly, the newborn may come into contact with some virus-carrying instruments or be infected by pathogens in the hospital, which may also lead to neonatal pneumonia. There are many causes of neonatal pneumonia, once diagnosed, it is recommended that standardized treatment be carried out as soon as possible to reduce the adverse effects of the disease.