Couples who want to have children are advised to stop smoking and drinking for six months before pregnancy in order to achieve eugenics. However, for some reasons, some women do not realize that occasional alcohol consumption during pregnancy is not alcoholism, and alcoholism certainly has an effect on the child, but occasional alcohol consumption is generally not reported in the literature to have a teratogenic effect on the child or intellectual development, so it is sufficient to stop drinking, and it is particularly important to have regular obstetric examinations. There is another exception, pregnant women drinking wine informal manufacturers, but their own concoctions of medicinal wine, such as wine put musk or saffron and other drugs, the embryo has an impact, part of the early miscarriage or teratogenic, late will be found to have intellectual or other aspects of the impact. Therefore, it is recommended to achieve eugenics, pregnant women who have the intention to have children, try to quit smoking, quit drinking, half a year before getting pregnant.