To provide interior material excellent in sound-proofness and sound absorption and suitable for a railway vehicle by compressing and forming porous material, making material of lower rigidity than a metallic plate, and laminating a ventilating decorative layer.

A decorative layer 2 having ventilation through a metallic net 3 is laminated on one face 1a of a base 1, and a metal foil 4 is stuck on the other face 1b to form interior material A. The base 1 is made a board compressing and forming mineral fiber such as glass wool and rock wool, since it is low rigid as compared with a metallic plate, it is difficult to vibrate for vibration and a sound wave, and radiation sound for an interior space B is significantly reduced. The decorative layer 2 is a sheet composed of nonwoven cloth or cloth such as' glass fiber, and radiation sound and sound generated in the interior space B are easily absorbed. The metallic net 3 cushions local external force, dispersion and absorption are performed in a wide range, the metal foil 4 facilitates attaching execution of the interior material A, and heat is reflected to improve insulation. Thus, the interior material A is suitable for the interior material of a railway vehicle.