We generally do not use particularly aggressive control standards in clinical practice. On the one hand, as age increases, the stricter the standard, the more likely it is to cause hypoglycemia, and it is difficult to achieve and maintain, so that patients’ compliance is not good; on the other hand, a few cases show that serious complications sometimes occur in patients with good glycemic control, so I personally tend to prefer a more moderate control target: fasting blood sugar: 6-7mmol/L -7mmol/L 2 hours postprandial blood glucose: 8-10mmol/L Glycosylated hemoglobin: 6-7% Most patients reported that these three standards are well achieved, thus also improving the quality of life, cooperation and compliance of treatment.