Alcohol consumption by men has an impact on pregnancy preparation. In the preparation stage of pregnancy, both men and women are not recommended to drink and smoke. If men drink alcohol, the alcohol in it may affect the quality of the sperm, which may affect conception or poor fetal development after conception. Alcohol is a harmful substance in the stage of male preparation for pregnancy, which may stimulate the nerves and affect the development of sperms, which may lead to a situation of low sperm vitality and viability. After drinking alcohol, it also stimulates the prostate gland, which may lead to prostate inflammation and other diseases, also affecting the growth and development of sperm. Men can eat some fresh fruits and vegetables, lean meat and other foods in the preparation stage, and pay attention to appropriate exercise, quit smoking and drinking.