To determine whether it is important for a pregnant woman’s blood sugar to be a little high two hours after a meal, it is necessary to depend on the actual situation, and cannot be generalized. If the two-hour postprandial blood glucose is a little high occasionally, and is caused by improper diet, generally does not matter. If it occurs frequently and the oral glucose tolerance test is abnormal, then it is important. If a pregnant woman’s two-hour postprandial blood glucose is a little high only occasionally, and because of the meal intake of too much sugar caused by transient elevation, generally does not matter, do not worry too much. However, if the two-hour postprandial blood glucose is a little bit high frequently, and there are abnormalities in the oral glucose tolerance test, it is necessary to consider that the pregnant woman may have gestational diabetes mellitus. To summarize, it is recommended that pregnant women with high two-hour postprandial blood glucose go to the hospital, complete the relevant examinations, and follow the doctor’s instructions to deal with the treatment after clarifying the specific causes.