Abdominal aneurysm refers to abdominal aortic aneurysm, which can not be cured by itself. If it does not reach the indication of surgery, it should be followed up by ultrasound and observed, and if it reaches the indication of surgery, it should be operated in time. Abdominal aortic aneurysm is a permanent limited expansion of the abdominal aorta, once ruptured, it is extremely dangerous, and patients can experience severe abdominal pain, shock, hemorrhage and other clinical manifestations. Abdominal aortic aneurysm cannot be cured on its own. If the tumor diameter is less than 5 cm, close monitoring and regular follow-up are required, and some medications with the ability to slow down the growth of the tumor and reduce the risk of rupture can be taken according to the doctor’s instructions. Patients with tumors more than 5 centimeters in diameter, or those with rapid growth, should undergo surgery in a timely manner. After the operation, we should closely monitor the blood pressure, heart rate, keep the bowel movement, eat a light diet, and keep a relaxed mood. Post-operative review should be done at 3 months, 6 months, and one year, and then annually thereafter.