Building material lamp

The invention discloses a building material lamp which comprises a wire outlet assembly (5) and a substrate (2). The wire outlet assembly (5) is fixed to the substrate (2), and the substrate (2) is provided with a plurality of light emitting units (6). The building material lamp is characterized by further comprising a light-pervious plate (1) and a support (4), wherein the substrate (2) is located between the light-pervious plate (1) and the support (4), and the edge of the support (4) and the edge of the light-pervious plate (1) are respectively provided with a clamping structure, the clamping structures are mutually matched, so that the support (4) and the light-pervious plate (1) are mutually clamped to form a whole with a smooth surface; the main body and the edge of the light-pervious plate (1) are light-pervious. Due to the fact that the support and the light-pervious plate are provided with mutually matched clamping grooves, the edge of the light-pervious plate is light-pervious, the building material lamp can be assembled firmly and conveniently without the need of screws, and mechanical and light seamless splicing between building material lamps can be achieved.