Pregnant women with high blood glucose cannot lower their blood glucose by eating food, and controlling their diet can reduce the rise of blood glucose. A variety of factors can affect blood sugar, such as genetic factors, dietary factors, obesity, lack of exercise, endocrine dysfunction and other reasons may lead to elevated blood sugar. Pregnant women with high blood sugar can eat more vegetables, beans, dairy and other foods with lower glycemic index, do not overeat, to control the amount of food and drink, and weight control. Pregnant women with high blood sugar, in addition to dietary regulation, should also be appropriate more exercise, maintain a pleasant mood. Pregnant women with high blood sugar can make individualized diet plan under the guidance of dietitians.