The present disclosure provides a backlight module. The backlight module includes a light source, a thermal plate, a back cover and an elastic holder. The light source is arranged on the thermal plate. The thermal plate is arranged on the back cover, and includes a first hole defined therein. The back cover includes a second hole defined therein, and the second hole overlaps with the first hole. The elastic holder penetrates through the first hole and the second hole, holds two surfaces of the thermal plate and the back cover apart from each other for fixing the thermal plate on the back cover. The present disclosure further provides a liquid crystal display.