For undiagnosed diabetic people, glycated hemoglobin 5.7% and postprandial blood glucose 6.62mmol/l are normal, but fasting blood glucose 6.49mmol/l is abnormal, may be pre-diabetic stage; for diabetic patients, the above indicators belong to the glycemic control standard, is normal. 1. Undiagnosed diabetic population: postprandial blood glucose usually refers to the 2-hour postprandial blood glucose, clinically the normal value of fasting blood glucose range of 3.9 to 6.0mmol/L, 2-hour postprandial blood glucose is normal less than 7.8mmol/L, glycated hemoglobin 4.0% to 6.0%. The current results show that fasting blood glucose is high, but does not meet the diagnostic criteria for diabetes mellitus (≥7.0mmol/L), may be impaired fasting glucose regulation, belonging to the pre-diabetic stage, it is recommended to improve the glucose tolerance and other related tests, a clear diagnosis of timely treatment and intervention. 2. Diabetic patients: For diabetic patients, the goal of glycemic control is generally in the fasting blood glucose 4.4mmol/L ~ 7.0mmol/L, non-fasting blood glucose not more than 10.0mmol/L, glycated hemoglobin below 7.0%. The current indicators are all within the target range for glycemic control and are normal. Abnormal blood glucose requires prompt medical attention to prevent delay.