Disclosed herein are a backlight module and a display device. The backlight module includes: a light guide plate, a light source assembly located on a first surface of the light guide plate, and a support bracket configured to support the light guide plate and the light source assembly; wherein the support bracket further includes an installation portion for fixing the light source assembly, and an elastic element arranged on the installation portion configured to adjust a gap between the light source assembly and the first surface of the light guide plate to a first distance.