Yesterday, we performed an interventional procedure to open the occluded vessel from the abdominal aorta to the left common external iliac artery in a patient with main iliac artery occlusion. The special feature was that this patient underwent interventional stenting of the main iliac artery 4 years ago due to main iliac occlusion and right lower extremity ischemia. In this procedure, we fed a catheter guidewire from the left upper extremity and advanced it downward outside the original abdominal main stent until it reached the true lumen of the lower external iliac artery, docked it with the left femoral artery puncture catheter, established a track, and then used a balloon to dilate it one by one and then placed the stent. The operation lasted about 2 hours, and the intraoperative blood loss was about 20 ml. Aortoiliac artery occlusion is a common type of arterial occlusion of the lower extremities, which mainly presents with ischemic symptoms such as coldness, numbness, and claudication in both lower extremities. Its claudication symptoms are different from those of femoral N artery occlusion, except for the lower legs, which may present with gluteal muscle claudication, mainly because the legs cannot be lifted after walking and improve after a moment of rest. Since a branch of the iliac artery supplies the perineum, the patient may also present with vascular impotence manifestations due to insufficient blood supply. CT angiography can confirm the diagnosis. In the past, open surgery was used for this type of disease, one of which is the axillary bifemoral artery artificial vessel bypass, which is a way to borrow blood from the upper extremities, the point is relatively small trauma, no need to open the abdomen; the disadvantage is that the artificial vessel path is long, travels under the skin, easy to be compressed, easy to thrombosis. Another method is to open the abdomen and bypass from the abdominal aorta to the bilateral femoral arteries. The point is that it is close to the anatomical location, with fast blood flow and less likely to be blocked; the disadvantage is that it requires opening the abdomen, is traumatic, may cause intestinal tube injury or postoperative adhesions, bleeds slightly more, and many patients need to enter the monitoring room after surgery, with a long recovery time. Due to the various disadvantages of open bypass, some doctors try to intervene to open it, but in the past, most of them used two bare stents in the lower abdominal aorta side by side down to the bilateral iliac femoral arteries. The disadvantage is that the two stents must be placed at the same time, and in cases where thrombus exists, the stent may cut the thrombus, resulting in incompetence within the stent, or thrombus debris dislodged leading to embolization of the distal small arterial branches. Dr. Zhang Xuemin of the Department of Vascular Surgery of the People’s Hospital started to try interventional opening of occlusive lesions of the main iliac artery in 2009 with good results, and was the first to propose the use of overlapping stents in the inferior segment of the abdominal aorta for patients who need to open bilateral iliac arteries in stages, which has the advantage of preventing thrombus in the inferior segment of the abdominal main from entering the lumen of the stent, and the second is that the catheter guidewire will not fail to open the stent on the opposite side due to drilling into the mesh of the bare stent during the second operation. In 2011, we performed aortic-bilateral iliac stenting in two stages for a 94-year-old man, which was our first attempt to open both iliacs in the abdominal aortic segment in stages using a membrane stent, and the procedure was a complete success. Since the postoperative follow-up, the old man has been walking and exercising every day and is hale and hearty. In recent years, based on the interventional stenting of the aorta, we have further improved the method and carried out staged interventional procedures based on thrombolysis of the aorta, and formed a set of standard procedures, and more and more elderly patients have been treated safely and effectively.