Blood glucose cannot be stopped by lowering the medication. At present, worldwide, diabetes is still a disease that can only be controlled but not cured, and it is a lifelong disease that requires lifelong treatment. Poor long-term blood glucose control in diabetic patients can produce macrovascular complications such as coronary heart disease and cerebral infarction, as well as a variety of microvascular complications such as diabetic nephropathy, retinopathy, and neurology. The treatment of diabetes requires the use of oral hypoglycemic drugs alone or in combination, or insulin therapy under the guidance of a doctor, depending on blood sugar, age, duration of diabetes and complications. During the course of treatment, it is necessary to review blood sugar regularly and adjust the dose of medication to avoid serious hypoglycemia. Only long-term good control of blood sugar can effectively avoid or delay the development of complications of diabetes, and in the process of diabetes treatment, patients should not stop taking their medication.