If a young child has fever symptoms, laboratory tests such as blood tests, calcitoninogen and C-reactive protein should be performed to clarify whether it is a bacterial or viral infection. If it is a bacterial infection, anti-infective treatment with macrolides, cephalosporins or penicillins is required. If it is a viral infection, antibiotics are not required for treatment. Fever in children is an autoimmune response of the organism by pathogenic attack, which helps to improve children’s own resistance. Therefore, the specific source of infection should be clarified before medication is used in the selection of drugs, and the change of body temperature should also be noted. If the body temperature does not exceed 38.5℃, physical cooling should be given temporarily for treatment. If the body temperature exceeds 38.5℃, accompanied by the baby’s uncomfortable symptoms, you can take oral antipyretic drugs such as ibuprofen or acetaminophen for cooling treatment.