At present, there is no clear standard for the normal value of blood glucose one and a half hours after a meal, which can be regarded as random blood glucose, generally normal not more than 11.1mmol/L, and diabetic patients need to control within 10.0mmol/L. Clinically, 2-hour postprandial blood glucose and fasting blood glucose are often used as the standard for assessing blood glucose level. Blood glucose one and a half hours after meal is random blood glucose, generally not more than 11.1mmol/L is normal. 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 should be controlled at no more than 10.0mmol/L, but also need to set up a glycemic control goal according to the individual situation. At present, the clinical practice usually uses 2-hour postprandial blood glucose and fasting blood glucose as the criteria for evaluating blood glucose levels. Fasting blood glucose 3.9-6.0mmol/L and 2-hour postprandial blood glucose less than 7.8mmol/L are considered normal. If abnormal blood glucose occurs, you need to consult a doctor for examination and treatment according to the doctor’s instruction.