Glucose tolerance test with 2 hours higher than 1 hour indicates that there is likely to be delayed insulin secretion or insulin resistance, which requires a comprehensive judgment of the specific situation of blood glucose according to insulin secretion. Under normal circumstances, glucose tolerance 2 hours after meal should be lower than 7.8mmol/L and 1 hour should be lower than 10.8mmol/L. If 2 hours is higher than 1 hour, it indicates low insulin secretion or insulin resistance. If the blood sugar is higher than 7.8mmol/L and less than 11.1mmol/L, it can be diagnosed as abnormal glucose tolerance or impaired postprandial glucose. It also needs to be based on fasting blood glucose. If the blood glucose is higher than 11.1mmol/L 2 hours after meal, it can be diagnosed as diabetes and needs to be rechecked 1 more time at different times.