In clinical practice, for patients with cerebral infarction, generally within 24-48 hours after the onset of the disease, the preferred fluid input should be saline, and glucose infusion should be avoided as much as possible. The reason is that after the onset of cerebral infarction, the local blood supply is often impaired, resulting in anaerobic metabolism of brain cells, and when glucose infusion is given to patients, the anaerobic metabolism of patients will also increase, which will lead to the accumulation of lactic acid and cause further damage to brain cells, thus aggravating the condition of patients with cerebral infarction. However, for patients with cerebral infarction, the choice of fluid infusion should also depend on the specific condition of the patient. For example, if the patient has obvious hypoglycemia, then the patient should be given a certain amount of glucose fluid infusion to raise the patient’s blood glucose level, not just because of the fear that the infusion of glucose solution will lead to local cell damage at the infarct site and affect the normal energy metabolism of other brain cells and tissues.