Abstract: Objective To evaluate the short-term and long-term clinical efficacy of per-cutaneous endovascular stent implantation in the treatment of subclavian artery steal blood syndrome (SSS).Methods A total of 28 SSS patients treated in our hospital from January 2010 to January 2012 were selected and given percutaneous endovascular stent implantation as well as transcranial doppler ultrasound (TCD),carotid duplex ultrasound (CDU)and digital subtraction angiography (DSA)before and after treatment.Follow-up was ended in January 2014 to observe the short-term and long-term clinical efficacy.Results Postoperative TCD,CDU and DSA showed positive blood flow in vertebral and basilar arteries and improved clinical symptoms in SSS patients.Only 3 patients were with relevant complications and 2 with recurrence ones at the end of follow-up.Con-clusion Percutaneous endovascular stent implantation is effective and safe in treating SSS with TCD and CDU as its routine therapies for follow-up clinic.