Abstract: A backlight module includes a case, on which a reflecting film, lamps and a diffusive plate are provided in order. The diffusive plate includes a transparent substrate, on opposite of which a first diffusive layer and a second diffusive layer are provided. The first diffusive layer has a plurality of holes, each of which has a first refracting curved surface and a second refracting curved surface at opposite sides thereof along a thickness direction of the diffusive plate. The lamp radiates light, a part of which is reflected by the holes and a part of which travels through the holes and is refracted at the first refracting curved surface and the second refracting curved surface respectively.