Provided is an electric wire routing structure which increases rigidity of mounting to a vehicle, etc., to suppress vibration, and which can increase conveyance efficiency and assembling workability. An exterior member (1) is provided with a stiff first protector (2) provided on one side in the longitudinal direction of a wire (W), a stiff second protector (3) provided on the other side thereof, an inside corrugated tube (4) which covers the outside of the wire (W) across the first protector (2) and the second protector (3), and an outside corrugated tube (5) which covers the outside of the inside corrugated tube (4). One end (41, 51) of the inside corrugated tube (4) and the outside corrugated tube (5) is fixed to the first protector (2); the other end (42) of the inside corrugated tube (4) is fixed to the second protector (3) and the other end (52) of the outside corrugated tube (5) is supported to allow sliding in the longitudinal direction relative to the second protector (3).