Patients with cerebral infarction keep saying that they are thirsty, which may be caused by hypovolemia caused by dehydration treatment of large cerebral infarction, and patients may have low blood pressure and increased urine output. If necessary, appropriate volume expansion medication can be applied, such as 706 plasma substitute or saline for intravenous infusion. It may also be caused by elevated blood glucose in patients with diabetes mellitus, which is an independent risk factor for cerebral infarction and may cause further elevation of blood glucose stress after cerebral infarction. Patients may experience thirst when their blood glucose is too high, and in severe cases, it may also cause hyperosmolar coma. Subcutaneous insulin hypoglycemic therapy is recommended for patients with blood glucose over 10 mmol/L. Oral medication hypoglycemic therapy can also be considered if the patient’s blood glucose is <10 mmol/L.