This stent delivery system includes: a guide catheter inserted into the inside of a cylindrical stent, and inserted into the interior of the living body with the stent； a pusher catheter inserted into the interior of the living body with the guide catheter in a state where the guide catheter is inserted into the inside of the push catheter, and which is for pushing the stent along the guide catheter； a stent connecting member for connecting the stent with the pusher catheter； and a stent releasing member for releasing the stent from the pusher catheter by separating the connection between the stent and the pusher catheter depending on the stent connecting member, which is independently operable separately from the guide catheter, and which is inserted into the inside of the pusher catheter.
