Pregnant women can eat potatoes to control sugar. Potato is a medium glycemic index food, the glycemic index of potato is about 62, glycemic index in 55 to 70 is a medium glycemic index food, so pregnant women can eat potatoes properly to control sugar, diabetic patients can also eat potatoes properly, but you can not eat too much at a time, do not recommend binge eating, do not recommend to eat rotting and deteriorating potatoes. Pregnant women in order to control blood sugar is not recommended to eat a lot of food with high sugar content, such as maltose, glucose, icing sugar, brown sugar, white sugar, doughnuts, fatty meat and so on. Pregnant women controlling sugar if the condition is aggravated because of improper diet, the patient should actively consult the doctor, under the guidance of the doctor to control the amount of food and drink, and usually to exercise and exercise more.