Light source module

The embodiment of the invention discloses a light source module comprising a light guide plate and a light source device, wherein the light guide plate is provided with a light outlet surface, a light reflecting surface opposite to the light outlet surface, and at least one light inlet surface connected between the light outlet surface and the light reflecting surface, the light guide plate is provided with a plurality of light reflecting structures on the light reflecting surface, each light reflecting structure comprises a closed light action region and a plurality of bulges arranged in the light action region, the light action region and the light reflecting surface are not arranged in the same surface, the bulges extend to the exterior of the light guide plate, and the light source device is arranged opposite to the light inlet surface. A light ray, provided by the light source device, enters the light guide plate by the light inlet surface, is redirected by one bulge on the light reflecting surface and then is guided out of the light guide plate by the light outlet surface. The light source module can provide better light outlet benefits.