The cycle of sperm formation is approximately 3 months. However, men can produce sperm every day, and mature sperm are usually found in the epididymis. The spermatozoa are produced by the varicocele of the testes and gradually develop in the epididymis from spermatogonia into primary spermatocytes, sperm cells, and mature spermatozoa, which are then stored in the seminal vesicles and expelled from the body with ejaculation. The ejaculated sperm enters the fallopian tube and can survive for about 5 days and has a high fertilization capacity. The chances of conception are generally higher if you have intercourse two days before and one day after the day of ovulation. In normal male semen, the sperm density is about 15 million per ml, the volume of semen per ejaculation is about 1-5 ml, and the total number of sperm discharged is 40 million per time on average. In addition, during the preparation period, attention should be paid to combining work and rest, eating more fresh fruits and vegetables, not staying up late, avoiding spicy and stimulating foods, and prohibiting smoking and drinking to prevent the quality of sperm from being affected.