In life, many men, especially newly married men are prone to the phenomenon of excessive sexual life, but they do not know that excessive sexual life is extremely detrimental to the health of men, not only that, but also may cause infertility in men. The actual fact is that you can find a lot of people who have been in the business for a long time. In the population of male infertility, 70% of men have a history of sexual intercourse too often, which is most prominent in newly married men. The danger of too much sex for men is very great, so male friends must moderate the frequency of sexual life, from the perspective of eugenics. As we all know, the normal male ejaculate during sexual intercourse should reach 1 to 6 ml, the total number of sperm contained in the semen must be more than 50 million and 70% of the sperm have normal mobility, only with these conditions sperm can reach the female uterine cavity and the egg combined to form a fertilized egg, the bed pregnant embryo. If couples have sex too often, it will lead to an oversupply of male sperm, and the quality of sperm will be poor, which will also directly affect fertilization, in addition to the sperm as an antigenic substance, frequent stimulation of women, will cause women to constantly produce anti-sperm antibodies, so that the male sperm agglutination or loss of due vitality, ultimately causing male infertility. From the above introduction, we have been able to clearly know that too frequent sex can lead to male infertility, so couples should always remember to control the frequency of sex when they have sex. Especially for families who are eager to have children, it is important to maintain a proper frequency of sex. But too often sex can affect male fertility, it does not mean that not to have sex, as long as the couple can have a degree when they have sex on the line, it is usually recommended that sex is generally about twice a week is the best. Of course, this also depends on the different circumstances to make appropriate adjustments, just right for the best.