From the perspective of eugenics, it is necessary to abstain from drinking alcohol for three months before preparing for pregnancy. For women, alcohol can cause some damage to the ovarian function, which can lead to the disruption of the menstrual cycle, affecting the quality of the follicles, and can also cause poor quality of pregnancy or abnormal development of the fetus. For men, alcohol and alcohol-containing beverages can greatly reduce the quality of sperm, causing abnormal sperm development or reduced motility, which may cause abnormalities in pregnancy. So for the fetus, from all aspects should be prohibited from drinking for three months, also do not eat some drinks or articles containing alcohol, these will lead to some abnormalities in the fetal brain, the development of organs will also have some impact. So for the sake of your baby’s health, you must abstain from alcohol for three months before preparing for pregnancy and getting pregnant.