Acute cerebral infarction fever with a lot of sweat may be related to infection or caused by central hyperthermia and other reasons. 1. Infection: patients with acute cerebral infarction have decreased resistance, which leads to lung infection; patients are often indwelling urinary catheter, which leads to urinary system infection. The symptoms of fever and profuse sweating may appear after the infection. 2. Central hyperthermia: acute cerebral infarction directly or indirectly damages the lower thalamus and the thermoregulatory center of the midbrain, resulting in abnormal thermoregulatory function, excessive heat production and reduced heat dissipation. The patient may have fever, accompanied by profuse sweating. Acute cerebral infarction with fever and profuse sweating may also be caused by other reasons. It is recommended to consult a doctor as soon as possible to confirm the cause of the fever and to have the treatment guided by the doctor.