Interior works are installed in highway tunnels for the purpose of ensuring the visual environment of passing vehicles, guiding the line of sight, and improving the lighting effect. Conventionally, the tile directing method, the panel floating method, and the painting have been applied to this interior work. Looking at the interior sheets that have been installed so far, there are some deformations such as peeling of tiles, damage to panels, and corrosion of fixing brackets. Therefore, the authors considered the application of an interior sheet worker using an adhesive sheet as an alternative to the interior worker who mainly uses tiles and panels. In this paper, when applying the adhesive sheet, the adhesiveness, which is one of the basic performances of the adhesive sheet, is peeled off and the adhesive force is grasped.