39 degrees took ibuprofen does not sweat does not go down fever should promptly seek medical attention, clarify the cause of the disease, follow the doctor’s instructions for physical cooling, increase the amount of medication, treatment of the original disease and so on. 1. Physical cooling: when 39 ℃ ate ibuprofen not sweat not reduce fever, you can drink hot water, through sweating to cool down, can also use ice bags or cold towels in the neck, groin, armpits and other places for physical cooling. 2. Increase the dosage: patients are advised to read the instructions carefully, if there is insufficient dosage to cause 39 ℃ take ibuprofen not sweating does not reduce fever, this time you can consult a doctor, under the guidance of the doctor to increase the amount of appropriate medication. 3. Treatment of primary disease: should first go to the hospital, relevant examinations, such as routine blood, CT, tuberculin test, new crown test, etc., to confirm the diagnosis, and then symptomatic treatment to help reduce fever. Patients with fever of 39 ℃, it is best not to self-medicate, should go to the hospital, identify the cause of the disease, and follow the doctor’s instructions for treatment.