There is a high risk of restenosis and vascular occlusion after interventional treatment for peripheral arterial disease (PAD), and some severe patients inevitably end up with amputation. Perivascular adipose tissue (PVAT) has been recognized not only as an inert tissue providing mechanical support, but also as a highly active endocrine and paracrine organ, which could provide a new imaging perspective into the pathophysiological mechanism of lower limb atherosclerosis microenvironment. The aim of this study is to identify novel and reliable non-invasive imaging biomarkers by exploring the potential association between lower limb PVAT imaging omics features and clinical outcomes (including death, major amputation, target vessel revascularization, etc.) in patients with PAD after interventional treatment. The study aims to offer clinicians with more accurate personalized risk stratification tools before surgery, thereby optimizing clinical decision-making and helping to achieve precision medicine for PAD.