A fever of 39°C can be reduced by physical cooling, drinking plenty of fluids, and medication. 1. Physical cooling: patients can wipe the large blood vessels through wet towels, such as thigh roots, armpits and other parts of the body, through wiping can accelerate the dissipation of heat, to achieve the effect of lowering the body temperature. 2. Drink more water: patients with a fever of 39 ° C will have sweating symptoms, a lot of sweating can promote the body to lose more water, causing dehydration. It is recommended to increase the amount of water to replenish the body’s loss of water, which is helpful in lowering the temperature. 3. medication: fever 39 ° C higher, need to go to the hospital in time, under the guidance of the doctor, to identify the cause of the disease, you can take oral antipyretic drugs, such as acetaminophen, ibuprofen and so on. It is recommended that patients with fever 39 ° C symptoms, according to the condition of the choice of treatment options, daily attention to drink more water, more ventilation, but also pay more attention to rest.