The conditions that cause female infertility can be roughly divided into the following: 1, ovulation abnormalities: this is the most important factor, the most important cause of ovulation abnormalities is polycystic ovary syndrome, polycystic ovary syndrome requires ultrasound to clearly diagnose.2, tubal incompetence: this cause accounts for more than 50% of the causes of infertility, generally related to inflammation, such as a history of abdominal surgery, a history of pelvic inflammation, a history of abortion, a history of abortion. It is also related to uterine operations such as laparoscopic and hysteroscopic surgeries.3. Endometriosis: A common cause of female infertility is endometriosis, such as endometrial polyps, endometritis, or uterine adhesions due to intrauterine operations. These factors are the three main causes of female infertility, the clinical need for gynecological clinic to rule out one by one.