Blood vessels are the conduits through which blood flows, and are located throughout the body. When blood vessels, especially arteries, become severely narrowed or occluded, local tissues can suffer from ischemia and hypoxia, necrosis, and even organ hypofunction or even failure. Angioplasty is to reopen the diseased vessels by various means to restore the blood supply to the local tissues. Currently, the angioplasty procedures commonly used in our department include balloon dilation and stent placement, which are used to treat vascular lesions in other parts of the body besides the heart and cranial vessels, especially vascular lesions of the extremities, liver vessels and renal artery stenosis. Vascular balloon dilatation is performed by placing an expandable balloon catheter in the stenotic segment after percutaneous puncture of the vessel to “open” the vessel through physical expansion of the balloon. Stenting is based on balloon dilation and shaping, and an internal stent is placed in the stented segment to support the stenosed and occluded segment, reduce the elastic retraction and remodeling of the vessel, and keep the lumen flowing smoothly, which has the effect of preventing restenosis.