Bilateral lower limb arterial occlusive disease is a serious vascular disease that threatens human health.Early and accurate diagnosis of this disease is of great significance for the development of treatment plans and the improvement of patient prognosis.With the continuous development of medical imaging technology,Computed tomography angiography(CTA)technology has been widely used in the diagnosis of bilateral lower limb arterial occlusive diseases due to its unique advantages.CTA can clearly and intuitively display vascular structure through non-invasive means,providing doctors with rich diagnostic information.This article aims to provide a comprehensive and in-depth reference for the application of CTA technology in the diagnosis of bilateral lower limb arterial occlusive diseases,and to look forward to its future development direction.