You can eat sweet potatoes for sugar control during pregnancy, but only sparingly. Sweet potatoes are rich in fiber, phosphorus, calcium, potassium, carotene, vitamin A, vitamin C, vitamin E, vitamin B₁, vitamin B₂ and other nutrients, pregnant women eat in moderation, you can supplement nutrients, relieve constipation. However, sweet potato glycemic index is 76.7, belonging to the high glycemic index of food, sugar control pregnant women are recommended to eat a small amount. Dietitians are recommended to participate in medical nutrition therapy, the principle of diet during pregnancy is to ensure the nutritional needs of pregnant women and fetuses, but also to maintain blood glucose in the normal range, and does not occur starvation ketosis. Whenever possible, foods with a low glycemic index should be chosen. Pregnant women are advised to seek medical attention when abnormalities in blood glucose occur.