The causes of elevated blood glucose 2 hours after meal for pregnant women include dietary factors, gestational diabetes and other reasons, which should be judged according to the specific values. 1. Dietary factors: If a large amount of high-sugar, high-fat food in a short period of time will cause the body’s blood glucose level to rise rapidly, but generally will not exceed the normal range, that is, the 2-hour postprandial blood glucose should be less than 8.5mmol / L. 2. Gestational diabetes mellitus: A series of physiological changes will occur in the body after pregnancy, leading to an increase in glucose demand, an increase in insulin resistance and a relative insufficiency of insulin secretion, which can lead to the occurrence of gestational diabetes mellitus. If a pregnant woman’s 2-hour postprandial blood glucose is higher than 8.5mmol/L, she needs to consider gestational diabetes. Pregnant women with high 2-hour postprandial blood glucose are advised to go to the hospital and ask the doctor to make a judgment.