The disclosure provides a backlight module, a display panel and a display device. The backlight module comprises a light guide plate, a light source assembly and a driving device; wherein the light guide plate has a light entering surface; the light source assembly is arranged at the outer side of the light entering surface of the light guide plate, and comprises a first light-emitting part and asecond light-emitting part which have opposite light-emitting directions, wherein in comparison with a light emitted by the first light-emitting part, a light emitted by the second light-emitting partincludes a few blue light; the driving device is used for driving the light source assembly to rotate, so as to enable the light source assembly to switch between a first state and a second state; when the light source assembly is in the first state, the first light-emitting part faces to the light entering surface; and when the light source assembly is in the second state, the second light-emitting part faces to the light entering surface. Through adoption of the backlight module, the display panel and the display device of the invention, the display device can switch between a normal display mode and a blue-light-proof mode.