Vascular blockage 70% is a severe stenosis, which if further developed will cause complete occlusion of the vessel, which will lead to further restriction of blood flow, causing insufficient blood supply to the distal part of the vessel and tissue ischemia and hypoxia. Therefore, 70% vascular blockage should be treated actively to avoid further development of vascular blockage, which may lead to serious clinical consequences. For example, complete occlusion of acute cerebral infarction, acute complete occlusive infarction or complete blockage of blood vessels in the limbs, leading to further reduction of blood supply to the distal limbs and causing adverse consequences such as amputation. In patients with 70% blockage, angiography is required to assess the site, degree and extent of the blockage and to select the appropriate treatment. Endoluminal treatment or surgical procedures are recommended to remove the embolism and blockage.