Female causes: female infertility causes include tubal factors: such as tubal inflammation caused by tubal obstruction; endocrine factors: endocrine disorders leading to ovulation disorders such as hyperprolactinemia, polycystic ovary syndrome, premature ovarian failure, hypogonadotropic disorders, etc.; uterine factors include adhesions in the uterine cavity, uterine dysplasia, uterine malformation, endometrial thinning; cervical factors: cervical erosion, adhesions, etc.; there are also some autoantibodies leading to immune infertility and unknown causes and several other factors. Cervical factors: cervical erosion, adhesion, etc.; there are also some autoantibodies caused by immune infertility and unknown reasons and other factors. Male factor: the causes of infertility are complex, there are male and female factors. So, how many of the causes of infertility are attributable to each sex? Some statistics show that 1/3 of the causes of infertility lie in the male side and 2/3 lie in the female side; other statistics show that 40% of infertility is caused by the male side, 40% is caused by the female side, 10% is caused by both male and female side and 10% is caused by both sides, and both sides do not find out the cause of infertility. In other words, infertility is a matter of both husband and wife, clinical often found that patients let the woman first check, the woman has no problem and then check the man, in fact, it is not right, we must both go to the hospital at the same time to check, in order to find out the cause of infertility as soon as possible, for different causes of different treatments, so as to choose the appropriate treatment, to achieve the purpose of fertility.