To solve the problem that a preferred product of a wiring tile utilizing a ceramic tile is not on sale now, though a wiring structure of a photovoltaic panel, in which the photovoltaic panel is installed on a base comprising vertical and horizontal bars provided on a roof and in which wiring connected to the photovoltaic panel is pulled into a building and connected to a wiring connection box in the building, and a structure of the wiring tile are conventionally known.

In this structure of the wiring tile, a hole for inserting the wiring is opened in the valley portion and flat portion of the ceramic tile; inverted U-shaped wall pieces are constituted at an interval on the periphery of the hole; a locking portion is provided in the wall piece; a cover body, which has an opening with an inner surface equipped with a portion to be latched, locked to the locking portion, is provided; the hole is enclosed with the cover body; and the wiring is guided to the hole by utilizing a gap opening an eaves side, between the opening of the cover body and a cut-off wall piece provided in the inverted U-shaped opening region of the wall piece.