The duration of the effect of alcohol consumption on sperm quality is related to the amount of alcohol consumed and there is no exact duration of the effect. If you drink alcohol occasionally and not too much, it usually affects your sperm for a short period of time. However, if you drink a lot of alcohol for a long time, especially if you get drunk frequently, it will affect the quality of sperm in men, resulting in decreased sperm quality, decreased vitality, and abnormal liquefaction time. It takes about 70 days for spermatogonia to develop and become spermatozoa in men, and a spermatogenesis cycle takes about 3 months. Therefore, if men want to prepare for pregnancy, it is best to quit drinking for more than 3 months, and also pay attention to regular work and rest during the preparation period. Note that drinking alcohol has an effect on the quality of sperm, so you should reduce or even stop drinking alcohol, and if you have sperm problems, you should treat them promptly.