A 2-hour postprandial blood glucose of 10.8 mmol/L is considered high. Diagnostic criteria for diabetes mellitus: diabetes mellitus can be diagnosed when fasting blood glucose ≥7.0 mmol/L, or 2-hour post glycemic load blood glucose ≥11.1 mmol/L, or random blood glucose ≥11.1 mmol/L, accompanied by three more and one less symptom. The diagnosis of diabetes mellitus is also considered in the absence of diabetic symptoms, with two consecutive fasting blood glucose ≥ 7.0 mmol/L on a non-same day, or 2-hour postprandial blood glucose ≥ 11.1 mmol/L. Normal 2-hour postprandial blood glucose value should be less than 7.8 mmol/L, 2-hour postprandial blood glucose is 10.8 mmol/L more than the normal range, belongs to the higher blood glucose value, the patient needs to control the diet, appropriate exercise, it is recommended to seek medical treatment to improve the glucose tolerance test, to clarify the diagnosis, and treatment under the guidance of the doctor.