In clinical practice, there are more causes of infertility. Therefore, if you have not gotten pregnant after 3 years of marriage, you must do a detailed examination to rule out infertility caused by blocked fallopian tubes, ovulatory dysfunction, as well as immune infertility and vaginal inflammation, and abnormal uterine development can also cause infertility. In addition, abnormal sperm of the male partner can also cause infertility, so a detailed examination must be done. It is recommended to go to the hospital on the second day of menstruation to have a blood test for sex hormone 6, to know whether the ovarian function, estradiol, luteinizing hormone, prolactin and testosterone are normal. A blood test will also be taken to check if the thyroid function is normal. In addition, ultrasound will be performed after the menstrual period is completely cleared to find out if there is any organic lesion in the pelvis and if the uterus is developing normally. Ovulation monitoring will be started on the 12th day of menstruation to find out if the ovaries are functioning normally. If all the above tests are normal, a tubal imaging is needed to rule out the possibility of tubal obstruction.