If the 2-hour postprandial blood glucose is 11.5mmol/L, and if there are typical symptoms of diabetes, then diabetes can generally be diagnosed, and it is recommended to improve the relevant examinations. 2-hour postprandial blood glucose less than 7.8mmol/L is normal, 7.8-11.0mmol/L is impaired glucose tolerance, ≥11.1mmol/L with diabetic symptoms can be diagnosed as diabetes mellitus. Typical symptoms of diabetes mellitus are “three more and one less”, i.e., drinking more, eating more, urinating more, weight loss, and also symptoms such as fatigue, dry skin, etc. In addition, in severe diseases or stressful situations, diabetes mellitus can be diagnosed as diabetes mellitus. In addition, in severe diseases or stressful situations, transient hyperglycemia can also occur, and at this time, 2-hour postprandial blood glucose 11.5 mmol/L cannot be diagnosed as diabetes mellitus. In this case, 2-hour postprandial blood glucose 11.5mmol/L can not be diagnosed as diabetes mellitus. We suggest that you consult a doctor in time to confirm the diagnosis after completing the relevant examinations, and then standardize the treatment under the guidance of the doctor.