Adults with a fever of 39 ℃ is not recommended to harden, it is recommended to take timely measures to lower the temperature, looking for the cause of fever, targeted treatment. Generally preferred physical cooling, you can use warm water or alcohol to wipe the neck, armpits, thigh roots 5-10 minutes, while drinking moderate amounts of water to prevent dehydration. If the effect of physical cooling is not satisfactory, you should go to the respiratory medicine department of the hospital in time for examination, and take oral medication as prescribed by the doctor, such as acetaminophen, fenbendazole or other non-steroidal anti-inflammatory and analgesic drugs. If oral medication is still unsatisfactory, injections and infusions may be necessary. You should not do strenuous exercise when you have a fever. Take rest, and you can take a walk, go for a slow walk, and other moderate exercise. Moderate drinking warm water to replenish water, should not eat spicy stimulating food, to light, conducive to the recovery of the disease; maintain a comfortable mood, divert attention.