High blood sugar can be selected according to different situations to use drugs, for example, high fasting blood sugar, you can choose metformin, etc.; if high postprandial blood sugar, you can use acarbose; can also be selected according to the mechanism of drug action, for example, there is a certain degree of insulin function of the patient can choose gliclazide and so on. 1. According to the blood sugar situation to choose the appropriate drugs: fasting blood sugar increase can give priority to the choice of drugs to reduce fasting blood sugar, such as metformin, gliclazide, etc.; if the postprandial blood sugar is high, give priority to the choice of drugs to reduce postprandial blood sugar, such as acarbose, voglibose, etc.. 2. Choose appropriate drugs according to the mechanism of drug action: if patients with certain insulin function can choose drugs to promote insulin secretion, such as gliclazide, reglanatide and so on. Some patients have a combination of elevated fasting and postprandial glucose, which can be combined with metformin and acarbose to lower both fasting and postprandial glucose. The treatment plan for diabetes needs to be individualized for each person, which requires monitoring the patient’s blood glucose, and using the medication appropriately under the guidance of the doctor.