Medication usually cannot be stopped even after blood sugar is normalized. Because diabetes is a chronic disease that may require lifelong medication, some pre-diabetic patients may stop taking medication. Adjustment of lifestyle and rational application of hypoglycemic drugs can effectively control blood glucose, but once the drug is discontinued, the patient’s blood glucose is likely to rise again, long-term hyperglycemia, unstable glycemic control can exacerbate diabetes and accelerate the progression of chronic complications of diabetes. And suddenly stopping the drug, may be due to the sudden rise in blood glucose and the occurrence of acute complications such as diabetic ketoacidosis and life-threatening conditions. A small number of pre-diabetic patients with good pancreatic function and elevated blood glucose is due to poor lifestyle, at this time can be improved through lifestyle (such as reasonable diet, appropriate exercise, weight loss, etc.) to normalize blood glucose control, and the drug may be discontinued. However, the condition of such patients may also progress, so regular monitoring of blood glucose is required. Therefore, patients with diabetes can not stop taking the drug even after their blood sugar is normalized. A small number of pre-diabetic patients may stop taking the drug. Diabetic patients should monitor their blood glucose regularly and take treatment under the guidance of a doctor.