PURPOSE: To arrange a specific electric wire in the sectional center of a wire harness.

CONSTITUTION: A binding fixture 10, formed in a cylindrical shape having a slit 10d along an axial line in both end openings by resin, providing a corrugated hollow 10b and protrusion 10c in a peripheral wall 10a, also flexing partly the peripheral wall in a radial direction toward the center, separably bringing both sides of a flexed part 10e into contact with each other, also swelling a flexed point extended to the center of a cylinder to form a small diameter cylinder part 10f, is provided. In this binding fixture, the small diameter cylinder part serves as a holding part 11 of a specific electric wire W-S inserted between both side flexed parts, and also a part between the small diameter cylinder part and the peripheral wall serves as a holding part 12 of a general electric wire W inserted from the slit. After inserting the respective general electric wire and specific electric wire to the general electric wire holding part and specific electric wire holding part, the peripheral wall is roughly wound or partially wound by an adhesive tape 14, to bind a wire harness.