A cable wiring method, wherein a route of a cable that connects a first connector of a first product and a second connector of a second product that are provided in an area surrounded by a plurality of columns, the method comprises; generating a provisional point at an intersection between a cable route along one of the columns and a plane that includes a coordinate of the first connector and is parallel to a plane of axes in depth and lateral directions; generating a first point at any position between a position away from the provisional point by the length of a certain bend radius of the cable in the lateral direction and a position determined by a coordinate of the axis in the lateral direction of the first connector.