Strictly speaking, pneumonia in babies does not recur after complete healing and recovery from symptomatic treatment, and it cannot be called a recurrence after getting pneumonia again, but a re-infection with pneumonia, and the time for re-infection to occur varies from person to person. Pediatric pneumonia is an inflammation of the lungs caused by different pathogens or other factors. In general, after active treatment of common pneumonia, most babies will gradually heal in 7-14 days and the chest imaging manifestations will disappear in about 4 weeks. However, it should be noted that unlike chicken pox and measles, pneumonia does not produce antibodies and immunity in the body after recovery, and the baby can still develop the disease again after being re-infected with the bacteria or virus that caused the pneumonia. Therefore, pneumonia will not recur after the baby is completely cured, but the infection will recur when the virus or bacteria is re-infected. In conclusion, to prevent your baby from getting pneumonia repeatedly, it is important not only to improve your baby’s resistance but also to prevent the possibility of reinfection. The first step is to arrange a light, easy-to-digest and reasonable diet for your baby as well as good eating habits, without being picky or partial. Secondly, it is important to have appropriate outdoor activities to adapt to the hot and cold air and the change of seasons. Again, avoid contact with other infected people, and avoid taking your baby to closed places with poor air circulation. Finally, when your baby has fever, persistent cough, wheezing and other symptoms, go to the pediatric department of the hospital for blood tests, chest imaging and other related examinations in a timely manner to clarify the cause of the disease and provide timely treatment to avoid delaying the baby’s condition.