In principle, there is no fastest way to reduce fever, and you can relieve the symptoms through physical cooling, medication and other methods. 1. Physical cooling: When you have a fever, it is recommended to drink more water, which can accelerate the body’s excretion. Or apply ice packs, take a bath, and then wipe your body with warm water, including the palms of your hands, feet, neck, armpits, etc., to assist in lowering the temperature through water evaporation. 2. Drugs to lower the temperature: If the temperature exceeds 38.5 degrees, in the physical cooling at the same time also need to take oral medication to control body temperature, such as ibuprofen suspension, Chaihu granules, acetaminophen, etc., with antipyretic and analgesic effect. If the effect of oral medication is not good, can be used to control the body temperature with nalgene suppositories or injections. If physical cooling is ineffective, it is recommended to go to the hospital in time to identify the cause of the fever and follow the doctor’s instructions for medication.