Subclavian artery steal syndrome is a syndrome in which there is partial or complete occlusive damage in the subclavian artery or the proximal segment of the vertebral artery at the beginning of the cephalic trunk, causing retrograde flow in the affected vertebral artery into the distal end of the affected subclavian artery due to siphoning, resulting in ischemic episodes in the vertebrobasilar artery and ischemia in the affected upper extremity. There can be symptoms of cerebral ischemia or upper extremity ischemia. There are two main types of surgical treatments commonly used: percutaneous transluminal angioplasty and various extra-anatomical bypasses. 1. Percutaneous transluminal angioplasty stenting (PTA) A balloon catheter is delivered via percutaneous puncture to the subclavian artery stenosis or occlusion, and the balloon is dilated to reconstruct the arterial lumen, and stenting is feasible to prevent elastic retraction and arterial entrapment. It has now become the treatment of choice for subclavian artery steal syndrome. 2.Extra-anatomical bypass reconstruction includes carotid artery-subclavian artery, subclavian artery-subclavian artery, axillary artery-axillary artery bypass diversion, etc. 3.For elderly patients with atherosclerosis, anticoagulation or anti-platelet aggregation agents can be taken to reduce the formation and development of thrombosis. For rare cases caused by giant cell arteritis, steroid treatment can be used.