15 patients suffering thromboangiitis obliterans with the occlusion of three branches below popliteal artery were treated by the operation of vein-arterification compounded femoral and popliteal planes at this hospital from 1990 to 1995. It is proved by clinical observation and correspondence with 15 patients that the symptoms ammeliated quickly and surely at the near future and forward blood supply lasted so as to avoid the complications of limb edema and heart failure. So the authors consider that the composite vein-arterification has a good anatomical and physical basis and suits to sufferers with the occlusion below popliteal vessels caused by different reasons, the principle of vein-arterification is to select the trunk artery of no pathological changes and not the collateral deep vein, but should select small-median superficial vein far away from pathological artery.