Pregnant women can eat chocolate in moderation, but not for pregnant women with gestational diabetes. Chocolate contains a certain amount of carbohydrates, fats, proteins and other nutrients. Eating chocolate in moderation can replenish the energy needed by pregnant women during pregnancy. However, chocolate is high in sugar and calories, and excessive consumption may lead to rapid weight gain of the pregnant woman and the fetus, or even induce gestational diabetes. In addition, pregnant women with gestational diabetes should not eat chocolate because of its high sugar content, which can easily cause blood sugar fluctuations and affect the health of the fetus. Meanwhile, pregnant women with gestational diabetes can eat foods with low sugar content, foods rich in high fiber and protein-containing foods as appropriate. Pregnant women should pay attention to a balanced diet and nutrition, a reasonable mix of coarse and fine grains, meat and vegetables, less cold, spicy and stimulating foods, maintain a happy mood, and regular obstetric examination.