Infertility mainly refers to a couple having a normal sexual life without any contraceptive measures and not getting pregnant for two years, which is called infertility. Of course, with the emergence of late marriage and late childbearing, this concept has also been adjusted to infertility mainly refers to couples who have a normal sexual life and do not take any contraceptive measures, but do not get pregnant for one year is called infertility, the time from two years to one year. Of course, if a couple has been married for less than a year but has known causes of infertility, such as premature ovarian failure or male azoospermia, they can be diagnosed as infertile even though the time is not enough.