Hungry in late pregnancy is mainly caused by a high basal metabolic rate at this time, pregnant women with diabetes should be vigilant about blood sugar abnormalities. 1. high basal metabolic rate: late pregnancy refers to the period after 28 weeks of pregnancy until delivery, at this time the fetus in the abdomen to accelerate the development of more nutrients, pregnant women eat more nutrients supplied to the fetus, there will be hunger. 2. Diabetes: Whether before or after pregnancy diabetes, poor blood sugar control, there may be more drinking, eating and urinating, and thus frequent hunger pangs, should pay attention to glycemic control can monitor blood glucose. It is recommended that pregnant women should eat small meals, reasonable diet, eat more high-quality protein, vitamin-rich foods, to ensure that caloric intake, regular pregnancy tests.