1. Vaginal ultrasound color Doppler examination. 2. Laparoscopy. It is the same as open surgery, but due to the elevation of the pelvis, the varicose vein may not be visible in some cases, but it can be identified with other lesions such as inflammation. Recently, it has been reported in the literature that spiral CT is a non-invasive and effective method to diagnose pelvic venous stasis syndrome, and the spiral CT with arterial image is taken when the patient is breathing deeply, because deep breathing causes the pressure of abdominal veins to increase, which results in the retrograde flow of renal venous blood and fills up the varicose veins around the uterus and ovary, and varicose veins with a diameter of >5mm can be visualized. Conventional CT only shows some dilated veins, which is not related to pelvic venous stasis syndrome. 4.Pelvic venography. Pelvic venography is to inject the contrast agent into the muscular layer of the uterine cavity floor, so that the uterine veins, ovarian veins and part of the vaginal veins and internal iliac veins can be visualized, and films are taken continuously at certain intervals of time, to understand the time of the pelvic blood (mainly the uterine veins and the ovarian veins) flowing out of the pelvis, as a method to assist in the diagnosis of pelvic venous siltation syndrome. When pelvic venous blood transportation is normal, the contrast agent usually flows out of the pelvis completely within 20s; while in pelvic stasis sign, the venous reflux speed slows down significantly, and the contrast agent flows out of the pelvis, taking more than 20s of time. 5, Radionuclide pelvic blood pool scanning. Use this method to diagnose pelvic venous stasis after tubal ligation. The principle is that the pelvic vein stasis when the local varicose veins, blood stasis to form a “blood pool”, so as to obtain the radioactive readable nuclide concentration of the scanning image. 6, position experiment. Chest and knee position, the pelvic vein pressure is reduced, no lower abdominal pain or slight pain, if immediately changed to the buttocks back sitting tightly on the heel, to maintain a position slightly above the abdomen, due to the tighter inguinal flexion, the external iliac artery to the femoral artery blood flow is blocked, thus the internal iliac artery blood flow increases, so that the pelvic vein pressure rises and produces stasis, the appearance of lower abdominal pain back to the chest and knee position, then the symptom is alleviated, known as the “positive position test”. “Positive postural test”.