Diabetes is a common chronic metabolic disease that requires lifelong treatment, and hypoglycemia often occurs during the course of diabetes treatment. The symptoms of hypoglycemia occurring in diabetic patients are related to age, the degree and magnitude of blood glucose reduction, etc. The main manifestations are: i. Symptoms of sympathetic excitement such as panic, sweating, hand trembling, pallor, hunger, etc. If hypoglycemia is not treated in time, hypoglycemic coma may occur, and even irreversible brain damage may be formed. Second, frequent hypoglycemia will lead to cognitive decline, memory loss, mental behavior abnormalities and other brain dysfunction. Third, patients with a long history of diabetes or frequent hypoglycemia may also experience asymptomatic hypoglycemia and go directly into hypoglycemic coma. Diabetic patients with hypoglycemia, which may be caused by overly strict dietary control or excessive drug doses, need to consult a doctor promptly and adjust the diet and drug treatment plan under the guidance of a doctor to avoid serious hypoglycemia.