A wiring structure of a wire harness in which a wire harness is fixed to an adhesive member laid on a surface of a roof lining of an automobile is disclosed, wherein on at least a part of a bent portion, the plurality of electric wires are sandwiched between two belt-shaped tapes in which both side edges are fixed to each other, are spread side by side in the width direction, and are attached to an adhesive surface provided on an inner surface of at least one of the two tapes, thereby providing a restraint portion in which the bundle of the electric wires is held in a flat shape, a portion excluding the restraint portion is a non-restraint portion in which the electric wires are unrestrained, and an outer surface of one of the two tapes in the restraint portion is attached to the adhesive member.