Diabetes is only typed without grading, but it can be divided into 4 levels according to blood sugar control. Fasting blood sugar >16mmol/L is the worse level. Diabetes is divided into type 1 diabetes, type 2 diabetes, gestational diabetes, and other types of diabetes. Clinically, it is mostly seen in type 2 diabetes. During treatment, patients need to monitor their blood glucose regularly, and doctors can determine whether the condition is stable and whether the medication regimen needs to be adjusted based on the blood glucose situation, which is very important for guiding medication and monitoring the condition. According to the blood glucose situation, there are four levels, namely satisfactory, good, fair and poor. Among them, poor represents fasting blood sugar > 8.8mmol/L; postprandial blood sugar > 11.1mmol/L; glycated hemoglobin > 8%. Patients with poor blood glucose control should go to the endocrine specialist in hospital in time to adjust the treatment plan, and at the same time, cooperate with diet and exercise to regulate.