Glucose 6.46 generally refers to blood glucose 6.46mmol/L. If it is fasting blood glucose 6.46mmo/L, it belongs to hyperglycemia, but does not reach the diagnostic standard of diabetes mellitus, and if it is 2 hours postprandial blood glucose 6.46mmol/L, it belongs to the normal range, and diabetes mellitus is not considered. Under normal circumstances, the normal value of human fasting blood glucose is 3.9~6.1mmol/L, and the two-hour postprandial blood glucose should be less than 7.8mmol/L. If it is a fasting blood glucose value of 6.46mmol/L, but does not reach the diagnostic standard of diabetes, oral glucose tolerance test can be carried out if necessary. If it is a two-hour postprandial blood glucose of 6.46 mmol/L, it is within the normal range and diabetes is not considered. In addition, it is recommended that patients with a fasting blood glucose value of 6.46mmol/L go to the hospital in a timely manner and follow the doctor’s instructions for treatment to avoid delays.