Background; a dilation of the blood arteries is referred to as an aneurysm. The infra-renal section of the aorta, often known as the abdominal aortic aneurysm, has the greatest incidence of Arterial aneurysms in the extracranial system. The major cause of arterial aneurysm disease-related death and morbidity is abdominal aortic aneurysms. As a goal and aim, to compare the EVAR and OSR of an infrarenal aortic aneurysm on an elective basis with respect to technical concerns and postoperative results, 30 patients suffering from infra-renal aneurysms were studied from July 2020 to July 2021 at Nasser Institute for Research Hospital, Cairo, Egypt, and the vascular unit of the Department of surgery at Benha University Hospital, Egypt. As a result, 39 patients were originally screened, 4 did not satisfy eligibility requirements, and 2 declined to participate; 3 were lost to follow-up, and 30 were eventually enrolled in the research, Conclusion: For infrarenal AAA, therapeutic methods like as EVAR and OSR have shown to be effective. There are many advantages of elective vasectomy, including the ability to do it under regional or local anaesthetic, shorter recovery time, and less strain on hospital resources. In the EVAR group, general anaesthesia was used far less often. The EVAR group had a substantially shorter operational time than the OSR group. Acute myocardial infarction occurred at a lower rate in the EVAR group than in the OSR group after surgery. EVAR has a lower 30-day mortality rate than OSR, despite the fact that the difference is minor. In comparison to OSR, EVAR had fewer cases of systemic and local problems.