Pneumonia in newborns can be recovered quickly if it is detected and treated in time. However, if the condition is delayed, serious sequelae of neonatal pneumonia can easily occur, causing serious harm to the baby’s health. The main sequelae include: first, heart failure. During the onset of the disease the child will be agitated, dyspnea, cyanosis, accelerated heart rate, generally at 180 beats/min, shortness of breath, breathing will generally be greater than 60 breaths/min, enlarged liver, swelling of the lower limbs, etc. Immediate measures should be taken to control its development. Second, respiratory failure. The child is irritable, dyspnea, cyanosis, accelerated respiration early and slowed down in severe cases, with moaning breathing and change of respiratory rhythm. In critical cases, the heart rate is accelerated or slowed down, and coma and convulsions can occur. Third, pneumothorax. In the case of Staphylococcus aureus pneumonia, pneumothorax is likely to occur. Fourth, hypoxic encephalopathy. Fifth, toxic shock. Sixth, toxic intestinal paralysis.