1, what is the definition of male infertility According to the World Health Organization (WHO), a man and a woman of childbearing age who have lived together for more than one year without using any contraceptive measures and whose female partner is infertile due to the male partner is called male infertility. Male infertility is just a clinical manifestation, not an independent disease, he is the result of one or many diseases and causes. 2, male infertility is becoming more and more common Male infertility is very common, and in recent years, the incidence of male infertility is still on the rise due to factors such as work pressure, the pace of life and the environment. The Institute of Science and Technology of China’s Population and Family Planning Commission found that the sperm analysis data from Beijing, Shanghai, Tianjin and other 39 cities and counties, 256 documents totaling 11,726 people, published between 1981 and 1996, found that the overall quality of semen of men in China is declining at a rate of 1% per year, although the conclusions of these studies are not necessarily accurate, but this is indeed a It is a matter of concern. According to the WHO survey, 15% of couples of childbearing age have infertility problems, while some areas in developing countries can be as high as 30%; both men and women have an equal chance of causing infertility, each accounting for 50%. 3, the longer the infertility lasts the worse the treatment There is definitely an impact. Generally speaking, the longer the normal cohabitation under normal sex life, the higher the chances of fertility. It has been reported that the fertility of normal couples in a single month pregnancy rate of 20% to 25%, six months pregnancy rate of 75%, 1 year pregnancy rate of 90%. When no contraception is used and you are unable to have children for more than 4 years, the pregnancy rate is only about 1.5% per month. So if you try to have children for several years and don’t get what you want, then the chances of having children in the future may be lower. 4, the worse the result of semen analysis the lower the chance of pregnancy Semen analysis is an important basis for assessing male fertility, and an accurate semen test is the first-hand information for the doctor’s diagnosis. It is generally recommended to test in the case of 3-5 days without intercourse, and if the result is not normal, it is recommended to check 3 times. If no sperm is detected, the semen should be centrifuged and the centrifuged sediment should be taken for examination. Abnormal test results indicate the presence of diminished fertility. The semen parameters most closely related to fertility are sperm count and viability. The lower the viability and number, the lower the chances of conception. The older the woman is, the lower the chances of fertility The age of both parties has an impact on fertility, especially the age of the woman. The fertility of the woman at the age of 35 is only 50% of that at the age of 25, drops to 25% at the age of 38, and may be further reduced to less than 5% when she is over 40. In assisted reproduction, despite advances in technology and optimization, the age of the woman is still one of the most important factors affecting success rates.