Postprandial blood glucose usually refers to 2 hours postprandial blood glucose, and 7.2mmol/L postprandial blood glucose is the normal situation. Clinically, the control standards of postprandial blood sugar for general population, diabetic patients, and pregnant women are as follows: 1. General population: 2 hours postprandial blood sugar should be <7.8mmol/L. If the 2 hours postprandial blood sugar is 7.2mmol/L and fasting blood sugar is between 3.9-6.1mmol/L, it indicates that the patient's current sugar metabolism is normal and can eat normally. However, weight should be kept within the standard range and not overweight. If combined with hypertension, coronary heart disease and other patients, they should take medication on time and adjust blood pressure and blood lipids. 2. Diabetic patients: If the 2-hour postprandial blood sugar is 7.2mmol/L, it indicates that the patient's postprandial blood sugar is within the normal range. In addition, fasting blood sugar should be controlled between 6.5-7.0mmol/L and glycosylated hemoglobin around 6.3%. Keep regular diet, reasonable meal and proper exercise, diabetic patients can exercise 3-4 times a week for 20-30 minutes each time; 3. Pregnant women: pregnant women require fasting blood sugar should be <5.1mmol/L, 1 hour postprandial blood sugar <10.0mmol/L, 2 hours postprandial blood sugar <8.5mmol/L. Pregnant women should try to eat less sweet food to avoid blood sugar The women should try to eat less sweets during pregnancy to avoid the rise of blood sugar, which may cause gestational diabetes and affect fetal development. For diabetic patients and women in pregnancy, attention should be paid to frequent monitoring of blood glucose to keep it within the normal range, to reduce the occurrence of acute complications of diabetes and to control the progress of chronic complications, such as infection, diabetic retinopathy, diabetic kidney, gestational diabetes, etc.