The frequent occurrence of hypoglycemia in diabetic patients is largely related to the oral hypoglycemic medication or insulin used by the patient. If a patient has frequent hypoglycemia in fasting, it is generally related to the dose of long-acting insulin or premixed insulin used at night, and the dosage of long-acting insulin or premixed insulin at night can be reduced appropriately. If the patient often has hypoglycemia after meals, on the one hand, it may be related to eating less, on the other hand, it may also be related to the patient taking sulfonylurea hypoglycemic drugs, or taking short-acting insulin before meals or too large a dose of premixed insulin, so in addition to improving the diet, the patient should go to the endocrinology department of the hospital for consultation and make appropriate adjustments to the dosage of hypoglycemic drugs or insulin according to the doctor’s recommendations. Adjust the dosage of glucose-lowering drugs or insulin according to the doctor’s recommendation to prevent the recurrence of hypoglycemia.