High-voltage wire wiring structure in vehicle

A high-voltage wiring structure in a vehicle includes an extending member extending in an extending direction which is a longitudinal direction or a width direction of the vehicle, a plurality of bulkheads respectively provided at a plurality of portions of the extending member in the extending direction, a high-voltage wire extended from a battery for driving the vehicle, and a pipe, in which the high-voltage wire is inserted, and which is surrounded by the extending member. A plurality of portions of the pipe in a longitudinal direction of the pipe are respectively fixed to the bulkheads by welding.