POWER SUPPLY STRUCTURE FOR SLIDING DOOR

This power supply structure for a sliding door suppresses noise caused by vibration of an electric wire when the sliding door opens and closes, and can improve the appearance of the sliding door. This power supply structure for a sliding door is provided with an other end holding part (3) which holds an other end of an electric wire (W). The other end holding part (3) is configured to comprise a first and second rotor arm (32, 33) which are rotatably supported directly or indirectly by the sliding door (D) and the leading ends of which hold the electric wire (W), and a biasing means which biases the first rotor arm (32) in the direction for taking up the excess length of the electric wire (W). When the sliding door (D) is slid, at a surmounting timing at which the electric wire (W) passes over a prescribed surmounting position (11a) on the bottom edge (11) of a door trim (T) which configures the vehicle interior side of the sliding door (D), the leading end of the second rotor arm (33) is inclined relative to