The embodiment of the utility model discloses a backlight module and a
display device. The backlight module comprises a back plate, an optical
assembly and a supporting component, the back plate is provided with a first side and a second side which are opposite, a first groove sunken towards the first side is formed in the second side of the back plate, a mounting opening is formed in the bottom of the first groove and penetrates through the back plate in the direction from the second side to the first side, and the optical
assembly is arranged on the first side of the back plate. The supporting component is arranged between the back plate and the optical
assembly, one end of the supporting component abuts against the optical assembly, the other end of the supporting component penetrates through the installation opening and is connected with the back plate, and at least part of the part, penetrating through the installation opening, of the supporting component is located in the first groove. The part, penetrating through the mounting opening, of the supporting component is protected through the first groove, so that the risk that other structures outside the back plate interfere with the supporting component to damage the supporting component is reduced, the supporting stability of the supporting component on the optical assembly is ensured, and then the display quality of the
display device is ensured.