Common clinical interventions mainly include the following: i. Arterial embolization chemotherapy for hepatic malignant tumors. For patients with multiple tumorigenic lesions in the liver, the opportunity for surgical radical treatment is lost. It can be done through imaging imaging and femoral artery puncture implantation of guidewire to reach the blood supply vessels of liver tumor and inject chemotherapeutic drugs into the vessels to occlude the blood supply vessels of liver tumor, thus causing the liver tumor to atrophy and necrosis by itself and delaying the progress of tumor lesions. Secondly, if the patient has arterial occlusion in the lower limbs, contrast agent can be injected via femoral artery puncture, and the site of arterial stenosis can be clarified under CT image oblique shadowing, and arterial stent can be implanted via guidewire placement into the stenosis, which can release the stenosis of lower limb arteries, restore local blood flow and improve the symptoms of local ischemia, hypoxia and pain.