A wiring protective cover structure for an electric drive vehicle is provided that can be used to cool a battery while effectively blocking noise that is generated from wiring for connecting an electric power converter and the battery disposed on a floor panel. A DC line cable 23 and a control line cable 25 that connect a battery 21 and an electric power converter 22 are disposed on a top surface of a center tunnel 37 of a vehicle 1, and a metallic wiring protective cover 35 has a cooling passage 30 disposed therein and is disposed on a floor panel 36 so as to cover the DC line cable 23 and the control line cable 25.