The normal 2-hour post-lunch blood glucose standard is <7.8mmol/L; for diabetic patients, the 2-hour post-lunch blood glucose control standard is <10mmol/L. 1. 1. Normal people: the normal value of 2-hour postprandial blood glucose is <7.8mmol/L. If there is an abnormality of 2-hour postprandial blood glucose, you should check the fasting blood glucose, glucose tolerance test, glycated hemoglobin and so on to know whether there is diabetes or not. 2. Diabetic patients: diabetic patients 2 hours after meal blood glucose control standard is <10mmol / L, for the short duration of the disease, long life expectancy, For patients with short disease duration, long life expectancy, and no obvious cardiovascular disease, more stringent control goals can be considered; for patients with a history of severe hypoglycemia, limited life expectancy, significant microvascular or macrovascular complications, and a long duration of diabetes mellitus, more lenient goals should be adopted. Individuals with blood glucose abnormalities should visit a hospital and be treated under medical supervision.