Men who frequently drink alcohol can affect the quality of semen after it is absorbed into the bloodstream, causing a decrease in the number and vitality of normal sperm, which may affect the quality of fertilized eggs if conception is successful, thus increasing the risk of abnormal embryo development, pre-term miscarriage, miscarriage, embryonic abortion and malformation. From the perspective of eugenics, it is generally recommended to abstain from alcohol for about 3-6 months in order to prepare for pregnancy, and the quality of sperm that can meet and fertilize the egg is relatively high quality, so it does not necessarily have any negative consequences. After the pregnancy is confirmed, it is important to pay more attention to the pregnancy and to strengthen the regular check-ups during pregnancy, so as to know whether the embryo is growing and developing well in the uterus, and to have an ultrasound examination of the nuchal translucency NT between 11 and 14 weeks of pregnancy, and a major abnormality between 20 and 24 weeks of pregnancy.