A protector which is used to cover a distal portion of a guide wire protruding from a distal opening of a tube body includes a first half body and a second half body which are movable between an open state and a closed state. Each of the first half body and the second half body includes a guide wire sandwiching and holding portion which mutually sandwich and hold the distal portion of the guide wire cooperatively in the closed state of the protector. Each of the first half body and the second half body also includes a tube body sandwiching and holding portion which mutually sandwich and hold the tube body cooperatively in the closed state of the protector.
