Pediatric internal medicine includes respiratory medicine, which is a secondary subspecialty of pediatric internal medicine. Because the scope of pediatric internal medicine is wide, including gastroenterology, respiratory medicine, nephrology, endocrinology, hematology-oncology and so on. If a child suffers from cough, runny nose, bronchitis, allergic rhinitis, bronchial asthma and other respiratory problems, it is more professional to go to the respiratory department of children’s hospital for treatment. If your child suffers from allergic asthma or allergic purpura, it is better to go to the allergic reactions department for treatment. If your child suffers from other problems, such as leukemia and aplastic anemia, it is better to go to the hematology-oncology department of Children’s Hospital for treatment. If the child suffers from urinary tract infection symptoms such as frequent, urgent and painful urination, or even acute nephritis or nephrotic syndrome, he or she should go to the nephrology department of the children’s hospital.