Light guide plate, backlight module and display device

The invention relates to a light guide plate, a backlight module and a display device. The light guide plate is provided with a body, a plurality of concave parts and a plurality of light splitting grooves, wherein the side surface of the body is defined as a light incident surface, the top surface of the body is defined as a light emergent surface, the plurality of concave parts are concavely arranged on the light incident surface of the body, the plurality of light splitting grooves are arranged on the light emergent surface of body and are respectively arranged corresponding to plurality of concave parts, a distance is formed between each light splitting groove and the light incident surface, and a light splitting point and a total reflection surface extending from the light splitting point to two sides away from the light incident surface are formed on one side, close to the light incident surface, of each light splitting groove, so that a part of light entering through the concave part forms a total refl