If you drink a little bit of alcohol occasionally during the preparation for pregnancy, it will not affect the fetus, but if you drink alcohol frequently, it will easily lead to embryonic dysplasia, fetal malformation, developmental delay and other negative consequences. If you drink a little bit of alcohol occasionally during pregnancy preparation, the alcohol will be metabolized quickly and will not affect the fetus. Men often drink during the preparation of pregnancy, alcohol will make the sperm quality decline, affecting the development of fertilized eggs, easy to cause fetal malformation and so on. If a woman drinks a lot of alcohol during the preparation period, alcohol will make the quality of the egg decrease, and after conception, it is easy to cause fetal intrauterine dysplasia and malformation. During the preparation period, both men and women should quit drinking, smoking, and bad habits, pay attention to rest, proper exercise, eat a balanced diet, and prepare for pregnancy scientifically. If pregnancy occurs after drinking alcohol, it is recommended to go to the hospital in time to observe the growth and development of the fetus, and if there is any abnormality, it is necessary to take appropriate methods to solve the problem.