An electric wire structure keeps down the weight and improves the ease of routing, as well as allows an existing electric wire to be easily provided with measures against electromagnetic waves. The electric wire structure includes: a single or plurality of electric wires; a single or plurality of GND members which are disposed around the electric wires along the electric wires and are grounded at both ends; and a bundling member for directly bundling the electric wires and the GND members which are not covered integrally by a jacket.