Thoracic aortic aneurysms form as a result of thinning and breaking of the middle layer of the artery, and the lumen expanding outward under pressure shock to form an aneurysm. The pressure on the aneurysm wall is proportional to the blood pressure and the radius of the aneurysm – the larger the aneurysm and the higher the blood pressure, the greater the risk of rupture and bleeding from the weak site, and the patient is often on the verge of life and death. Aneurysms are very dangerous, with one-year and five-year survival rates of only 60% and 20%, and are commonly referred to as “unscheduled” bombs in the human body. Traditional treatment requires open-heart aneurysm removal and artificial vessel grafting under extracorporeal circulation. Although the efficacy is remarkable, the chance of serious complications and death is 5%-15%. Today’s increasingly sophisticated endoluminal isolation of aortic aneurysms has significantly changed the treatment landscape. With the full assistance of the relevant departments, the right common femoral artery was exposed through a small incision in the patient’s right groin, and the overlapping stent delivery system was introduced; the overlapping stent was accurately released under DSA surveillance, and the aneurysm was successfully isolated; re-imaging after the release of the overlapping stent showed that the aneurysm had disappeared, and no internal fistula occurred, achieving a satisfactory treatment result.