Children with a fever of 38 degrees can take physical cooling methods, such as warm water baths or fever-reducing patches. You can wipe the forehead, armpits, palms and feet, or you can use ice packs to physically cool the body. If the patient’s body temperature rises further and exceeds 38.5°C, antipyretic drugs such as Merlin and paracetamol can be used. When a patient develops fever, it is recommended to actively seek medical attention to improve the routine blood count, C-reactive protein and other related tests. If the white blood cells are lower than normal and the lymphocytes are increased, it is considered a viral infection and antipyretic, detoxifying or antiviral drugs such as busulfan, oseltamivir and abirater can be used. If the patient has elevated leukocytes, the clinical consideration is combined with bacterial infection, which requires the addition of antibiotics, such as cefixime, azithromycin, etc.