Children always get bronchopneumonia, which may be caused by low immunity, incomplete development of bronchial tubes and incomplete treatment. 1. Low immunity: some children’s low immunity can easily lead to the invasion of bacteria, viruses and other pathogens through the bronchial tubes, resulting in recurrent episodes of bronchopneumonia. 2. Inadequate development of bronchial tubes: some children have incomplete development of bronchial tubes due to congenital bronchial atresia and tracheal chondrosis, which may lead to recurrent episodes of bronchopneumonia in children. 3. Incomplete treatment: When a child suffers from bronchopneumonia, if he or she does not follow the doctor’s instructions to follow the course of targeted treatment, the treatment time is too short, which may lead to incomplete treatment, thus resulting in recurrent episodes of bronchopneumonia. Children always get bronchopneumonia, there may also be other reasons, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.