It is recommended to go to the pediatric department of a regular hospital to improve the blood routine, calcitoninogen, C-reactive protein and other necessary tests, as well as to combine whether the baby has other accompanying symptoms and give the corresponding treatment under the guidance of a specialist to avoid further aggravation. The common disease of fever is upper respiratory tract viral infection, which is self-limiting and does not require oral penicillin or cephalosporin drugs.