Drinking a lot of cola during pregnancy may have negative effects on the fetus. Cola contains caffeine, pregnant women for caffeine metabolism slows down, the body of caffeine can be through the placenta to reach the baby body, if the intake of too much will have a risk of miscarriage, preterm delivery, etc. In addition, cola also contains tannins, which has a negative impact on the absorption of iron, which is easy to lead to pregnant women with iron deficiency, it is not recommended to drink a lot of cola during pregnancy. Pregnant women in daily life should also daily light diet, to avoid intestinal stimulation, pay attention to the diet, you can eat fruits and vegetables reasonable supplement vitamins, pay attention to nutritional balance, appropriate to strengthen the intake of protein and so on.