Alcohol consumption by men definitely has a certain effect on pregnancy, because men who drink a lot of alcohol for a long period of time will lead to a decline in testicular function, which can lead to a decrease in the production of sperms, as well as a decrease in the ability to store sperms, which is very unfavorable to pregnancy. Long-term alcoholism can also lead to a significantly higher rate of sperm deformities, which is not only not conducive to natural pregnancy, but also not conducive to the development of the fertilized egg after pregnancy, which may lead to abnormal development of the fertilized egg, and even cause miscarriage and fetal death in the uterine cavity. Especially during the preparation of men must not drink alcohol, if the drunkenness of alcohol after the sexual partner pregnant, then it is recommended that the best for abortion, to avoid the normal development of the fetus later. Not only men, but also women should avoid drinking alcohol during the preparation period, women drinking alcohol is also very detrimental to the normal development of the fertilized egg and fetus.