It is not recommended for diabetic patients to stop using hypoglycemic drugs after their blood glucose is smoothly controlled. type 1 diabetic patients who have reached the standard of blood glucose control by insulin have the risk of inducing diabetic ketoacidosis if they stop using insulin. type 2 diabetic patients in the early stage, after intensive treatment by insulin, have good recovery of pancreatic islet function, and take oral metformin and other drugs for hypoglycemic treatment, it is not recommended to stop using the above mentioned drugs, there is a risk of blood glucose rebound after discontinuation, and it may cause acute and chronic complications of diabetes.