The main methods to lower blood sugar quickly are: oral hypoglycemic drugs and insulin injection. Blood sugar can not be lowered too quickly, should be based on their own blood sugar situation to choose the most suitable sugar-lowering program, can not just seek fast. 1. Oral hypoglycemic drugs to lower blood sugar quickly: this method is usually applicable to diabetic patients in the early stage of diabetes and blood sugar is not very high. Clinical hypoglycemic drugs mainly include fasting blood glucose control and postprandial blood glucose control drugs and other categories of drugs, these drugs are used for rapid hypoglycemic efficacy. 2. Insulin injection: Insulin injection is the fastest and most effective way to lower blood sugar. When using this method to rapidly lower blood sugar, it is necessary to closely monitor the changes in blood sugar to prevent hypoglycemia. There are many types of insulin in the clinic, which can be categorized into rapid-acting insulin, short-acting insulin, intermediate-acting insulin, long-acting insulin, and premixed insulin according to the time of action. When injecting insulin, you need to follow the doctor’s instructions and follow the standard procedures, and choose the appropriate insulin under the doctor’s guidance according to the actual situation. If diabetic patients have high blood glucose levels, it is recommended to identify the cause of the problem under the guidance of a doctor so that the blood glucose level can return to the normal range as soon as possible in order to avoid adverse consequences.