Fever is a common clinical symptom and can be caused by a variety of infectious and non-infectious diseases. Fever will subside after sweating, but it does not mean that the fever will not recur after the fever subsides, you should continue to closely observe whether there is any discomfort, if the fever symptoms continue to be unrelieved, you should go to the hospital in a timely manner for examination and treatment. Patients in the process of fever, pathogens will produce an inflammatory reaction in the body, fluctuations in body temperature. The human body has the ability to self-regulate the body temperature, in fever will sweat, the body heat can be dissipated through sweating and air convection, to achieve the purpose of lowering the body temperature, fever. Therefore, fever can be reduced after sweating. If a child’s fever is 38-38.5℃, he can use a wet towel to wipe the whole body to dissipate the body heat; when the body surface evaporates water after taking a bath, it will also absorb the body heat. When the body temperature is above 38.5℃, consider using antipyretic medication. After sweating with fever, it is recommended that adults can drink warm water and fresh fruit juice in moderation to promote sweating and urination to take away the body heat and achieve the purpose of fever reduction. At the same time, you can test the blood routine to clarify the cause of the disease and carry out symptomatic treatment under the guidance of the doctor.