For normal people, 2-hour postprandial blood glucose is generally less than 7.8mmol/L is normal, for patients who have been diagnosed with diabetes in the past, generally 2-hour postprandial blood glucose needs to be controlled below 10mmol/L can be considered normal. If diabetic patients with higher than normal blood glucose, long-term persistence of unrelieved, may appear diabetic foot, diabetic ketoacidosis, diabetic hypertonic hyperglycemia syndrome and other serious complications, and even coma, shock and other serious consequences. When abnormal elevation of blood glucose is found, it is necessary to seek timely medical treatment and standardized hypoglycemic therapy under the guidance of a professional physician to avoid the adverse effects of the disease.