Abstract: A heat-shrinkable tube attachment jig includes a terminal holding portion that holds a plate-shaped counterpart connecting portion of a terminal, a placement portion on which a distal end portion of a heat-shrinkable tube that is located on the counterpart connecting portion side is placed, and a wire holding portion that holds a wire. The placement portion clamps the distal end portion of the heat-shrinkable tube between the placement portion and a bottom portion of the terminal on which the wire held by the terminal holding portion is arranged. A placement surface of the placement portion on which the distal end portion of the heat-shrinkable tube is placed is disposed at a higher position than a lower surface of the counterpart connecting portion of the terminal held by the terminal holding portion.