Backlight module and display device are provided. The backlight module includes an accommodation frame including a base and an extending part, a first light guide plate, a second light guide plate; a first reflector, a first light source, and a second light source. The first light guide plate and the second light guide plate are disposed sequentially along a direction perpendicular to a plane of the base in an accommodation space formed by the base and the extending part, and are controlled independently. The first light source has a wavelength λ1 of 780 nm