The backlight module and a display device

The utility model discloses a backlight module and a display device. The backlight module comprises a backboard, a reflector plate and an LED lamp bar. The LED lamp bar comprises a base and LED lamps. The backboard comprises a backboard body part and a backboard side wall part. The reflector plate comprises a reflector plate body part and reflector plate protrusion parts, and the two reflector plate protrusion parts are in contact with the first side face and the second side face of the base respectively. The backboard side wall part is in contact with the third side face of the base, and the reflector plate body part is in contact with the fourth side face of the base. According to the technical scheme, the LED lamp bar and the backboard can be fixed under the premise that fixing adhesive tape does not need to be arranged, so that the problem that glue remains on the backboard in the reworking process in the prior art is solved. In addition, according to the technical scheme, light guide plate protrusion parts are arranged on a light guide plate, so that the lattice point distribution area corresponding to a vertex angle beta is increased, correspondingly, the luminance at the vertex angle beta is improved, and dark corners on the display device are avoided.