The fever can be cooled down by physical cooling, medication, and auxiliary massage. 1. Physical cooling: If the fever temperature does not exceed 38.5 ℃, you can first take physical cooling, such as drinking more water to strengthen the metabolism, use warm water to wipe the forehead, palms and feet, back, etc., to help cool down the temperature. 2. Drug cooling: body temperature over 38.5 ℃, need to use antipyretic drugs to lower the temperature, such as ibuprofen, acetaminophen suspension. 3. Treatment of the cause: after the body temperature is lowered, take stomach-healthy and food-eliminating drugs to eliminate the accumulation of food, such as stomach-healthy and food-eliminating tablets. If the fever continues to be unrelieved, it is recommended to consult a doctor and use medication under the guidance of the doctor.