A backlight module and a display device are provided. The backlight module includes a back plate, a light guide plate, a first and a second light sources, and a cushion member. The back plate includes a top surface having an opening, a bottom surface, a first and a second sidewalls, to define an accommodating space. The light guide plate is disposed in the accommodating space. The light guide plate includes a first and a second light-incident surfaces, and it is connected to a light-emitting surface. The first and second light sources are disposed beside the first and second light-incident surfaces respectively, and the first light source is relatively close to the first sidewall of the back plate, and an adjustment space is provided between the second light source and the second sidewall of the back plate. A cushion member is located in the adjustment space.