If the male partner drinks alcohol for a long time, it can cause sperm underdevelopment and lead to congenital malformation and mental retardation of the child. Alcohol can be absorbed by the fetus through the placenta, affecting fetal development and leading to the risk of fetal developmental malformations and impaired mental development. The first trimester of pregnancy is a critical period for fetal development, and if you drink a lot of alcohol at this time, it may cause great harm to the fetus. If you want to have a child, you should quit smoking and drinking six months in advance, develop a good lifestyle, prepare well for pregnancy and be responsible for the health of your offspring, and also have regular maternity checks as required after pregnancy.