Smoking has a great impact on pregnant women, the main effects are the following: First, regular smoking can lead to miscarriage, premature birth and other situations, and may also cause stillbirth. Second, if pregnant women often smoke in the usual may appear fetal development deformities, mental retardation, etc., the nicotine in the smoke is a toxic, harmful substances, the light may lead to fetal developmental disorders, the heavy may affect the normal growth of fetal death, so women in the usual best not often smoke, so as not to produce damage to the body. Third, pregnant women who smoke for a long time will affect the normal function of the ovaries, leading to ovarian aging or other complications, thus affecting the health of pregnant women, if you want to have a healthy baby must pay attention to stay away from tobacco and alcohol.