Blood glucose 8.0 mmol/L is higher than normal, normal people’s fasting blood glucose should be lower than 6.1 mmol/L, and blood glucose two hours after the sugar load should be lower than 7.8 mmol/L. Therefore, blood glucose 8.0 mmol/L, either fasting blood glucose, or two hours after meal blood glucose or random blood glucose, is higher than normal, and oral glucose tolerance test is needed to be examined. Based on the results of the oral glucose tolerance test, the state of glucose metabolism is clarified, whether it is impaired fasting glucose or abnormal glucose tolerance and diabetes mellitus. Impaired fasting glucose and abnormal glucose tolerance are also known as impaired glucose regulation, also known as pre-diabetes. In addition, if a patient has a blood glucose of 8.0 mmol/L during an acute infectious trauma or other stressful situation, the glucose value at this time should not be used to determine the status of glucose metabolism, but should be reviewed after the stress is eliminated to redetermine the status of glucose metabolism.