To exhibit superior workability and beautiful finishing by providing a connecting part, overlapped with one end of a wiring gutter and sandwiching a side wall for the wiring wire-gutter and a shade extended from the connecting part and covering an opening hole.

An opening hole A is bored in a wall surface to draw out an electric wire W. A base 10 of a wiring gutter 1, or the end is attached to the wall face near the opening hole A. After the electric wire W is stored along the opening of the base 10, the opening of the base 10 is covered with a cap 11. Then, the vicinity of the connecting part 30 of a connecting member 3 is pushed against the vicinity of the end of the wiring gutter 1, and a shade 31 is pushed against the opening hole A. Both sidewalls of the connecting member 3 for the wiring wire-gutter are deformed elastically, so as to be swelled outward and sandwich the sidewalls adjacent to the end of the wiring wire gutter 1 in four sandwiching parts 31a,..., 30a, and are attached to the wiring gutter 1, so that the shade 31 can conceal by covering the opening hole A in the wall face and the electric wire W adjacent to the opening hole A.