Tubal angiography can be done if the pelvic fluid is small. If the pelvic fluid is large and there are pelvic inflammatory symptoms such as abdominal pain, tubal angiography cannot be performed. Contraindications for tubal imaging also include: i. acute and subacute inflammation of the internal and external genitalia; ii. severe systemic diseases that cannot tolerate the procedure; iii. during pregnancy and menstruation; iv. within six weeks after delivery, miscarriage or curettage; v. iodine allergy. Hysterosalpingography is performed by injecting contrast into the uterine cavity and fallopian tubes through a catheter, performing X-ray transmission and radiographs to find out whether the fallopian tubes are patent, the site of obstruction and the morphology of the uterine cavity according to the contrast image in the fallopian tubes and pelvis. This test is less invasive and can provide an accurate diagnosis of tubal blockage and has certain therapeutic effects.