Sweet potatoes do not have a direct role in the long fetus, but eating sweet potatoes in moderation during pregnancy can increase the intake of calories and fiber, which has certain benefits for pregnant women and fetuses, because pregnant women can be absorbed through their own metabolism after eating sweet potatoes, which are converted into energy and absorbed by the fetus. If a pregnant woman in pregnancy in the following cases, usually need to reduce the amount of sweet potatoes, or do not eat sweet potatoes: 1, high blood sugar: because sweet potatoes contain high starch, can be converted into sugar, gestational diabetes patients need to listen to the doctor’s dietary advice, reduce the amount of sweet potatoes, or do not eat sweet potatoes; 2, early pregnancy reaction: if a pregnant woman early pregnancy reaction is obvious, nausea, vomiting is serious, due to the satiety of sweet potatoes relatively strong, eating too much sweet potato will aggravate the symptoms; 3, indigestion: excessive consumption of sweet potato will make a large amount of stomach acid, stimulating the gastrointestinal mucosa, and sweet potato in the oxidative enzymes and crude fiber in the gastrointestinal can produce a large amount of carbon dioxide gas, so that the pressure in the stomach rises, leading to intestinal flatulence, the digestive tract function is relatively weak pregnant women try to avoid eating sweet potato. In pregnancy if you want to promote the normal growth of the fetus, pregnant women intake diet to nutritionally balanced, need to supplement sufficient protein, vitamins, pay attention to the meat and vegetables, choose a variety of food, to ensure a balanced diet, do not over intake of a certain food.