Abdominal aortic aneurysm refers to an aneurysm that occurs in the segment of the aorta below the diaphragm, and depending on the location it can be categorized as infrarenal abdominal aortic aneurysm and thoracic abdominal aortic aneurysm. The aorta is called thoracic aorta when it passes through the chest and abdominal aorta when it passes through the abdomen. Abdominal aortic aneurysms are dilated arterial diseases, mostly caused by degenerative lesions of the arterial wall, such as atherosclerosis. The abdominal aorta is often involved in the lower part of the renal artery, so this is also a favorable site for abdominal aortic aneurysm. The disease is asymptomatic or mild in the early stages and is only detected during physical examination. Individuals may experience abdominal pain. When the tumor increases in size and presses on other tissues and organs, the symptoms of compression in the corresponding areas may also appear. Rupture is a more serious complication of abdominal aortic aneurysm and may cause hypotensive shock, which is a serious threat to life. Therefore, once abdominal aortic aneurysm is detected, it is necessary to consult the doctor in time for targeted treatment.