Children’s axillary temperature of 39 ℃, belong to high fever, is due to a variety of reasons for the body’s inflammatory response to the performance, this time need to use antipyretic drugs (such as ibuprofen) symptomatic antipyretic, and find out the causes of fever (such as acute upper respiratory tract infections, Kawasaki disease, etc.), and to treat the cause of the disease. For children to measure the temperature, usually using the axillary temperature, body temperature of 39 ℃, for high fever, children can be due to the obvious increase in body temperature, respiration, heart rate increases and general discomfort and other phenomena, and some may appear convulsions, so the need to use antipyretic drugs under the guidance of the physician (eg, acetaminophen) for symptomatic treatment, and at the same time may be appropriate to use warm water wiping and other physical cooling to reduce the discomfort caused by the rise in body temperature. The cause of the fever should be clearly identified. At the same time, the cause of fever should be clarified, such as acute upper respiratory tract infection, the above symptoms may occur, may be accompanied by nasal congestion, runny nose and other symptoms, can be treated with four seasons of antiviral combination of treatment for secondary bacterial infections require the use of antimicrobial drugs (such as cefaclor) anti-infective treatment. It can also be seen in Kawasaki disease, in addition to recurrent fever, may also be accompanied by skin rashes, chapped lips and other symptoms, after the diagnosis is clear need to use gammaglobulin and aspirin and other drugs to treat. These medications should be used under the supervision of a physician. It is recommended to consult a specialist to determine the cause of the disease and treat it.