[Problem to be Solved] Provided is a pusher guide wire and a delivery system which can smoothly pass even through the inside of a curved blood vessel without causing excessive burden to a stent, a catheter, and the like.[Solution] A pusher guide wire 10 has a tubular member 15 capable of moving in a radial direction relative to a core shaft 11, and the tubular member 15 makes contact with a stent 2A in an appropriate manner when passing through the inside of a curved blood vessel. Further, the stent can be pulled back inside the catheter in a case where a proximal end engagement portion is provided at a proximal end of the stent and the stent is placed between the tapered portion of a second coil body and the tubular member.
