To provide wall paper which has a simple structure, can effectively prevent an aperture occurred in a joining portion between a wall paper and another wall paper, and quickly and easily enables an adhesion work to an inner wall, or a ceiling a building to chieve at a low cost, and to provide a method for adhering the same.

This wall paper 10 comprising a long sheet having a prescribed width and obtained by laminating a paper substrate 11 and decorative paper 12, characterized in that the longitudinally one side edge of the wall paper is formed in a slightly longer size than the end edge 12a of the paper material.