Baby fever 38.6 ℃, usually due to viruses, bacteria and other pathogens caused by infection, you can use warm water wipes, paste antipyretic patches and other physical cooling, oral ibuprofen and other fever-reducing drugs, or oral antiviral drugs, antibiotics and other treatment. Baby fever 38.6 ℃ belongs to low fever, usually due to viruses, bacteria and other infections caused by respiratory tract infections, gastrointestinal tract infections, urinary tract infections, you can feed your baby more lukewarm water, take a lukewarm bath, use lukewarm water to wipe the armpits, groin, neck and other locations to cool down, you can also choose to antipyretic patches to lower the temperature. If the temperature does not drop and still tends to rise after physical cooling, pediatric ibuprofen, acetaminophen and other medications can be taken orally to reduce fever. It is also necessary to take antiviral drugs (such as oseltamivir) and antibiotics (such as amoxicillin) according to the original disease under the condition of the doctor’s advice, and pay attention to prevent allergies. If your baby has a persistent fever of 38.6℃, poor mental status, impaired consciousness, febrile convulsions (convulsions due to high fever), etc., you need to go to the hospital in time for treatment. If medication is needed, it should be used under the guidance of a doctor.