Couples who have had normal sexual intercourse for a year and have not used contraception but have never become pregnant are considered to be infertile, usually called infertility when it is related to women and infertility when it is related to men. The causes of female infertility are mainly related to organic lesions and immunity.1. Fallopian tube factor: the fallopian tube is the tube that carries sperm, eggs and fertilized eggs to the uterine cavity, and if there is dysfunction, lumen inaccessibility or lesions, it may lead to female infertility.2. Ovarian factor: if the ovaries cannot ovulate normally and cannot form fertilized eggs, conception is impossible.3. Cervical and uterine factors: such as abnormal morphology of the cervix 3, cervical and uterine factors: such as abnormal morphology of the cervix, atresia of the cervical canal, abnormal anatomical structure of the uterus, endometriosis or adhesions of the uterine cavity due to acquired causes can cause female infertility; 4, autoimmune factors: autoimmune factors can produce antibodies against sperm, making it impossible for sperm and eggs to combine, resulting in repeated fertilization failures of fertilized eggs. In addition, men with abnormal semen, low sperm count or abnormal morphology, congenital varicocele insufficiency, intercourse difficulties or impotence can also affect women’s pregnancy, so when infertility occurs, both partners need to go to the hospital at the same time for relevant examinations to identify the cause and then treat it.