A man’s occasional small amount of alcohol has no effect on the preparation for pregnancy, but if frequent and large amounts of alcohol abuse will affect the preparation for pregnancy. It is generally recommended that men do not drink alcohol during the preparation period, because the alcohol content in wine will cause different degrees of impact and harm to the male endocrine and reproductive system, which is not conducive to eugenics. If men drink at least a small amount of alcohol occasionally, it will not affect the preparation for pregnancy, but it is better to have an interval of one month after drinking before getting pregnant. If the man is a long-term alcoholism will affect the preparation for pregnancy, long-term alcoholism may lead to endocrine system disorders, may also affect the male spermatogenic function, resulting in men with low sperm, weak sperm, sperm vitality decline, sperm deformity rate increased and other abnormalities, will reduce the chances of getting pregnant, and after the pregnancy is prone to foetal termination or miscarriage and other accidents. If you are planning to conceive, it is recommended that men quit smoking and drinking 3 months before pregnancy, and women should not drink alcohol, take moderate folic acid supplements, and do a good job of pre-pregnancy checkups and preparations.