Men should quit smoking and alcohol 3 months to 6 months in advance before preparing for pregnancy. Usually eat more high protein foods, such as eggs, lean meat, milk, fish and shrimp, etc., which can increase the protein in the body and can improve the quality of sperm, and also need to exercise properly to enhance their physical fitness. It is best to combine this with eating nutty foods that can play a role in zinc supplementation, such as melon seeds, walnuts, almonds, and pistachios, etc. These are good foods. When preparing to get pregnant, the frequency of intercourse should not be too frequent, it is best to cooperate with female ovulation, choose 3-5 days to have intercourse once, can improve the quality and amount of sperm, improve the chances of female conception.