Upper extremity pulselessness is a common clinical condition in which patients present with no pulse on one upper extremity, often accompanied by dizziness and upper extremity weakness, which is often caused by occlusion of the subclavian artery stenosis. When the subclavian artery is narrowed, the blood supply to the upper extremity is reduced, resulting in a weakened pulse. In order to supply blood to the upper extremities, part of the blood flowing to the brain is compensated through the vertebral artery to supply blood to the upper extremity arteries, and the reduced blood supply to the brain can produce symptoms of dizziness caused by ischemia. Cerebral angiography is the gold standard for diagnosing the disease, and if there is subclavian artery stenosis, it can be quickly cured by minimally invasive interventional placement of a stent. This method is non-invasive, less invasive, simple, safe and has become one of the preferred methods for the treatment of this disease because of its rapid postoperative recovery.