Postprandial blood glucose generally refers to 2h postprandial blood glucose, normally not more than 11.1mmol/L, 13.5mmol/L is high, but not a serious high-risk value, whether it is serious needs to be judged with the specific situation of the subject, if 13.5mmol/L is measured after eating a lot of sweets, the subject does not have other uncomfortable symptoms, generally not serious; if the diabetic patient postprandial blood glucose 13.5mmol/L, easily combined with infection or diabetic foot, this situation is also more serious. If a diabetic patient has a postprandial blood sugar of 13.5mmol/L, he or she is prone to co-infection or diabetic foot, and this situation is more serious. 1. General population: The general population may have a sharp rise in blood sugar after eating a lot of sweets, and a postprandial blood sugar of 13.5mmol/L may appear, and the subject has no other uncomfortable symptoms, so it is generally not serious. . However, it is necessary to promptly seek medical attention and conduct detailed examination to clarify whether there is diabetes or impaired glucose tolerance; 2. Diabetic patients: If diabetic patients have postprandial blood glucose 13.5mmol/L, and if they also have combined infections, including lung infection, urinary tract infection, and skin infection or occurrence of diabetic foot, then blood glucose 13.5mmol/L is more serious. In addition, if the patient is also combined with myocardial infarction, cerebral hemorrhage, cerebral thrombosis and other major acute cardiovascular and cerebrovascular diseases, postprandial blood sugar 13.5mmol/L is also more serious, because in stressful situations, high blood sugar can easily occur diabetic ketoacidosis, which may even endanger the patient’s life; 3. Pregnant women with gestational diabetes: postprandial blood sugar 13.5mmol/L is more serious and may have a greater impact on the fetus and pregnant women have a greater impact, such as leading to miscarriage, premature birth, etc. Pregnant women are also prone to various types of infections, or excessive amniotic fluid, huge fetuses, etc. Therefore, the postprandial blood glucose 13.5mmol/L depends on whether the patient has elevated blood glucose alone or combined with other diseases on the basis of elevated blood glucose. If the patient is combined with hypertension, coronary heart disease, myocardial infarction, hyperlipidemia, obesity, hyperuricemia and other chronic metabolic diseases, the situation is more serious. In addition, high blood sugar is prone to various acute infections and can accelerate the occurrence and development of various chronic complications of diabetes, etc., which should be taken seriously.