To provide a guide wire insertion aid which can achieve the prevention of buckling of the guide wire, shortening of the time for insertion and removal work, the curtailment of the man-hours of provided with a helper, etc., in the insertion and removal work of the guide wire, can improve the insertability of the guide wire to a guide wire insertion appliance, enables the helper to easily carry out the work to rotate the guide wire, facilitates the operation of the guide wire and can make the craft of the guide wire easier.

This guide wire insertion aid is provided with a guide wire insertion aid body 17 which intermittently performs the action to insert and remove the guide wire 2 into and from a catheter 1 by repeating the action to move the guide wire 2 locked to a locking section 18a of an inner cylindrical member 16 together with the inner cylindrical section 16 by accompanying the action to project and sink the inner cylindrical member 16 into and out of an outer cylindrical member 15 and the inner cylindrical member 16 is provided with a rotation regulating section 25 of the guide wire 2.