The normal blood glucose 2.5 hours after meal should not exceed 7.8mmol/L, and for diabetic patients, it should not exceed 10.0mmol/L. Fasting blood glucose and 2 hours postprandial blood glucose are mostly used as the evaluation indexes in clinical practice. The 2-hour postprandial blood glucose should be no more than 7.8mmol/L. It is recommended that patients improve the fasting blood glucose, 2-hour postprandial blood glucose, glycated hemoglobin and other related examinations. 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 does not exceed 10.0mmol/L. Prompt medical attention is recommended for abnormal blood glucose.