A stent delivery device includes: a knob having a first passage a fitting portion; a handle rotatably installed on the fitting portion and having a winding portion; a guide member having a second passage, a fitting hole and an insertion, a first guide hole and a second guide hole; an inner tube inserted into the first and second passages and exposed, a guide tip being installed on one side of the inner tube so as to form a mounting space in which the stent is mounted; an outer tube movably installed on the outer surface of the inner tube, a connecting tip being provided on the outer surface of the outer tube; and a pulling wire connected to the winding portion and to the connecting tip of the outer tube through the first and second guide holes.