The invention provides a backlight module which comprises a rubber frame, a light guide plate and a backlight source, the rubber frame comprises two opposite side walls and an end wall used for connecting the two side walls, a bearing plate is arranged on the side, located between the side walls, of the end wall, a limiting plate is connected between the side walls, and the limiting plate and the bearing plate are located on the two opposite sides of the light guide plate respectively; the light guide plate is provided with an in-light surface, a limiting block and a limiting groove, the limiting block and the limiting groove are arranged on the two opposite surfaces of the light guide plate and are close to the end, provided with the in-light surface, of the light guide plate, the rubber frame is arranged on the periphery of the light guide plate, the backlight source is installed on the bearing plate and located on the side of the in-light surface, the limiting groove is clamped with the bearing plate, and the limiting block is located between the end wall and the limiting plate and abuts against the limiting plate, so that the light guide plate is positioned on the rubber frame. The invention further provides a display device.