Disclosed herein is a stent delivery system which includes: a hollow shaft first and second expandable balloons arranged around of the distal end of the shaft and a stent which is arranged around the second balloon such that it expands as the second balloon expands the first balloon having drug release means for releasing a drug at least to prevent the proliferation of endothelial cells, the stent being a bare metal stent to be indwelled at a target position as lesion of stenosis or occlusion in the lumen of a living body.
