Fever that does not go away requires physical cooling, timely examination in the hospital to identify the cause of the disease and reasonable treatment. Patients with fever that does not go away can easily affect the function of the cerebrovascular system, which will further develop into more serious conditions. Meanwhile, fever that does not go away may also be a sign of some kind of disease in the body. At this time, physical cooling methods should be taken to temporarily control the body temperature, and then go to the hospital for systematic examination to identify the cause of the disease and make a clear diagnosis, so as to formulate a reasonable and effective treatment plan. Once the primary disease is under control, the body temperature will naturally drop.