The elderly fever to 39 ℃ means that the fever is more serious, the elderly need to give oral antipyretic drugs or use other ways to reduce fever, as follows: 1, oral antipyretic drugs: you can choose ibuprofen suspension or acetaminophen suspension, in general, a need to take 10 ml. if there are repeated high fever, after an interval of 4-6 hours can be repeated once, a day of medication 2, topical drugs to reduce fever: you can use indomethacin suppositories to the anus of the elderly to reduce fever treatment, at this time you can plug half a tablet to reduce fever, the effect is sufficient, and the duration of fever is also longer; 3, physical cooling: you can extend the time of action of antipyretic drugs, but also reduce the use of antipyretic drugs to avoid the side effects of drugs. It is mostly recommended to use warm towels to rub the skin of the whole body of the elderly, especially the time of rubbing the armpits, groin and neck can be extended appropriately, and let the elderly drink warm boiled water a few times. In addition, fever patients should not wear too many clothes or cover themselves with too thick a blanket, so as not to interfere with body heat distribution. In the process of fever reduction, the patient will sweat a lot, so use a hot towel to wipe away the sweat from the chest, back, armpits and forehead, and change clothes in time. In addition, pay attention to replenish nutrients and water, and clean the oral hygiene adequately.