If a woman is infertile, the only way to find the cause clinically is to find the cause. For women with infertility, if the cause of infertility is identified and treatment is given to the cause clinically, most of them can still achieve pregnancy, but it is relatively troublesome to investigate the cause again. For example, it is necessary to check sex hormone six, thyroid function, immune infertility, monitor ovulation and exclude the possibility of inflammation. If clinically necessary, tubal imaging is also required to rule out infertility due to tubal obstruction. In addition, correct guidance of intercourse can also improve the chance of pregnancy, for example, scientific intercourse within the time of ovulation, generally three times, each intercourse time apart, will also improve the chances of pregnancy in clinical practice.