Abdominal aortic aneurysm is a common disease, closely related to atherosclerosis, which seriously endangers the life and health of middle-aged and elderly people. Most patients have no obvious symptoms in their normal life, and often find a beating mass in the abdomen by chance. As the mass increases, other symptoms will appear, the most important of which is pain in the abdomen or lower back, and sometimes the patient will feel a slight hidden pain, which is because the enlarged mass presses on some organs in the abdominal cavity and therefore produces discomfort. The normal adult abdominal aorta has a diameter of 40px-50px. When the abdominal aorta expands and swells to more than 50px, it is diagnosed as an abdominal aortic aneurysm. The most common complication is rupture of the abdominal aortic aneurysm. There are usually two types of rupture: one is direct rupture into the abdominal cavity, resulting in intra-abdominal hemorrhage, and the patient often does not have the opportunity to be transported to the hospital for treatment; the other is retroperitoneal rupture, where the bleeding is slower and there is hope for survival through emergency surgery, but the mortality rate of surgery is close to 50%. Pain is a common symptom before abdominal aortic aneurysm rupture, mostly located around the umbilicus and in the middle and upper abdomen. If the aneurysm invades the lumbar spine, there may be lumbosacral pain. If there is severe pain in the abdomen or lumbar region recently, it often indicates that the aneurysm is on the verge of rupture. The famous scientists Albert Einstein and Li Siguang both died from ruptured abdominal aortic aneurysms. Another common complication of abdominal aortic aneurysm is arterial embolism, because there is a large number of attached thrombus in the aneurysm cavity, the thrombus block can be blocked to other arteries with blood flow, causing the corresponding organ ischemia, such as blocking to the lower limb artery can cause acute lower limb ischemia, and serious cases can lead to limb necrosis; if blocked to the mesenteric artery, it can cause acute intestinal necrosis. The treatment of abdominal aortic aneurysm mainly includes conservative treatment and surgery. Conservative treatment is mainly applied to patients with asymptomatic early aneurysms with small aneurysm diameters, including control and treatment of atherosclerosis risk factors (such as lowering blood pressure, blood lipids, sugar and smoking cessation) and regular follow-up observation (every 3-6 months) to understand the degree of aneurysm progression. Surgical treatment is mainly used for symptomatic abdominal aortic aneurysms and for patients with larger aneurysm diameters and greater risk of rupture, and includes both open surgical treatment as well as endoluminal intervention. Intracavitary intervention is preferred for patients of advanced age, with more underlying diseases and poor physical condition, who cannot tolerate open surgery, with less intraoperative bleeding, less trauma and faster postoperative recovery.