Male infertility is defined as having sexual intercourse without any contraception for more than 1 year and not getting the partner pregnant because of the male partner. Regarding the definition of male infertility and its clinical availability for standardized treatment. First of all, in principle, azoospermia patients are considered to be absolutely infertile, and once diagnosed, they can enter the male infertility treatment process; as long as there are active sperm in the male semen, fertility is possible. Therefore, theoretically, men without a history of infertility can be observed as long as there are active sperm in their semen; patients with a history of infertility and abnormal semen routine (except for azoospermia patients) only have a reduced probability of natural conception, which should be accurately described as low fertility. The probability of pregnancy for couples of childbearing age is 75% in six months, 85% in one year, and 90% in some cases. Secondly, the success rate of male infertility treatment is significantly correlated with the fertility of the female partner, so it is important to assess the female partner at the same time, especially the age of the female partner. Age has an impact on human fertility. Men over 40 years of age are 50% less likely to impregnate a female partner within 1 year compared to younger men at 25 years of age; men over 45 years of age take longer (about 6 times longer) to impregnate a female partner than men at 25 years of age. Age has an even greater impact on female fertility: at age 35, a woman’s fertility decreases to 50% of that of a 25-year-old; at age 38, it decreases to only 25%; above age 40, it is less than 5%; and above age 45, even with IVF, the success rate is close to 0. Therefore, a woman whose spouse is 35 years old or older and who has not used contraception for more than six months without pregnancy can enter the infertility treatment process. The success rate of IVF is close to 0. Again, when there are family factors or when one of the infertile couples is suspected of having infertility, the examination for infertility does not have to be postponed until after 1 year. If there is no history of infertility, then there are active sperm in the semen that can be observed, and there is no problem of oligospermia, weak, or teratospermia. Should be in eugenics, the focus is on the female put into obstetrics and gynecology for eugenics, rather than look at infertility. If you have a history of infertility, you will enter the infertility treatment process, and both sides need to go to a regular hospital for treatment.