The causes of fever are infectious and non-infectious, cefixime, ibuprofen and dexamethasone tablets can be used as prescribed by the doctor. 1. Infectious diseases: when the patient has fever due to infection, the cause should be identified, the infection should be removed, and symptomatic medication should be used, such as bacterial infections that cause fever can be prescribed to use cefixime, ibuprofen and other drugs, such as viral infections that cause fever can be prescribed to use acyclovir tablets, compound acetaminophen tablets and other drugs. 2. Non-infectious diseases: leukemia, malignant tumors, systemic lupus erythematosus and other diseases. Fever in addition to the treatment of the original disease, but also follow the doctor’s instructions to take dexamethasone tablets, aspirin enteric-coated tablets and other drugs to effectively lower the temperature. Fever should be treated under the guidance of a doctor, to avoid blind treatment delay.