Fever in cerebral infarction is a very common clinical phenomenon, and it can be caused by a variety of reasons. I. Central fever, which is caused by lesions that damage the hypothalamic thermoregulatory center of the brain. Second, absorption fever, which is mostly seen in patients with more extensive lesions, but the temperature of this fever is usually not very high and can gradually subside with the course of the disease. Third, more common and with a greater impact on the prognosis are co-infections, mainly lung infections and urinary tract infections. In addition, fever can be caused by dehydration, etc.