Toinvestigatenewgraftmaterialsforreconstructionofarterialcirculationforlowerlimbsarterialischemia,authorstreated18patientswith24ischemiclowerlimbswithbypassofsmallsaphenousveininsitufromMay,1992toMay,1997whowerefollowedupforonetofiveyears.Theshorttermresultshowedthatischemicsymptomswereimprovedsignificantlyin88.8%oflimbs.Goodorexcellentrateofthelongtermresultreached83.3%.Thepatencyrateofthegraftbythelifetableanalysisin1,3and5yearswas95.8%,79.6%and70.0%respectively.Weconcludethatusingsmallsaphenousveinasthegraftmaterialtoreconstructthecirculationoftheischemiclegisagoodoperationforlongsegmentofarteriosclerosisobliterans(ASO)andthromboangiitisobliterans(TAO)withtheocclusionofthreebranchesinferiortopoplitealartery.Ithastheadvantagesofnolimittolength,unnecessarilypredamagingvalvesandligatingbranchesinfullcourseconsequentlytoavoidreversionanddistortion.