A wiring structure of an in-wheel motor power line (93) includes: an intermediate part extending in a vertical direction and held in an intermediate clamp portion (94); a first sagging region (93d, 93e, 93f) which extends downward from an in-wheel motor drive device (10) side and sags in such a way that the direction thereof changes gradually from downward-facing to upward-facing toward the intermediate part; and a second sagging region (93g) which extends upward from the intermediate part and sags in such a way that the direction thereof changes gradually such that an angle of inclination thereof decreases toward the vehicle body side. The intermediate clamp portion is provided on a vehicle body (101) or on a suspension device in such a way as to be capable of moving at least in the vertical direction. When the position of the in-wheel motor drive device is displaced relative to the vehicle body, the intermediate clamp portion moves in the vertical direction and the sag shapes of the first sagging region and the second sagging region change.