To provide an attaching member capable of attaching an attaching member by attaching a ceiling or inner wall board to the attaching member providing a locking pawl or a notch or not attaching it and only by inserting a ceiling joist bracket or the edge part of a furring strip in the locking pawl or the notch.

A plurality of sash bars 8 are provided by folding a plate, a cross section shape comprises a non-uniform N-shaped piece, one end edge is orthogonally fixed on a face parallel to a plate face 7 of the sash bar 8, and a plurality of locking pawls 9 in which the other end edge is opened are provided at a prescribed interval to compose an attaching member 6. A ceiling or inner wall board 3 is fixed on a face of the opposed side to the sash bar 8 of the plate, a ceiling joist bracket or the edge of a furring strip is pressed from the open edge side of the locking pawl 9 and can be sandwiched by the locking pawl 9 and the face of the sash bar 8.