【】Objective To evaluate and follow-up the effection of left subclavian artery origin stenting(SAOS)by color Doppler flow imaging (CDFI) and assess the rate of restenosis after stenting,hemodynamic changes after stent implantation, prognosis and correlative risk factors of influence.Methods 58 cases of left subclavian artery origin stenting in patients in my hospital from 2010 June to 2012 August.The diameter of SAOS, peak systolic velocity(PSV) of segment at origin and brachial artery were evlaueted before and every 1、3、6、12、24、36month after SAOS by CDFI.Results the diameter of SAOS was improved from (3.20 2.20) mm to (8.50 3.60) mm (P=0.02), PSV of segment at origin and brachial artery also decreased from(325±113)cm/s to(158±102)cm/s (P=0.01)and increased from(45±17)cm/s to(75±23)cm/s (P=0.01).range 1 to 36 months,the cumulative restenosis rate at 3、6、12、24、36 month were5.1%、15.5%、27.5% 、34.4%、36.2%、37.9%。Conclusions CDFI is a sensitive and noninvasive examination to follow-up SAOS and detect in-stent restenosis immediately. the left subclavian artery initial segment of in stent restenosis reference standard should improve the preoperative; residual stenosis、 vascular bending、infection、 stoping drug or medication is not law and other factors can increase the rate of restenosis.