Hypoglycemia is a common acute complication in diabetic patients, and almost all diabetic patients have experienced varying degrees of hypoglycemia. The causes of hypoglycemia in diabetic patients include the following: i. Irregular diet. Hypoglycemia may occur when diabetic patients have too little diet, unreasonable diet structure and delayed meal intake. Second, too much exercise, exercise will lead to excessive calorie consumption and hypoglycemia occurs. Third, diabetic patients receiving insulin promoter or insulin therapy, when the dose of insulin is too large or the dose of oral hypoglycemic drugs is too large, it may also lead to the occurrence of hypoglycemia. When diabetic patients are combined with other diseases, such as hypoadrenocorticism, hypothyroidism, and hypopituitarism and other endocrine diseases, it may also cause hypoglycemia.