The embodiment of the invention provides an LED light bar, a backlight module and a display device, and relates to the technical field of display. The hot spot phenomenon can be avoided, and the quality of display images of the display device is improved. The LED light bar comprises a circuit board, a plurality of LED chips and a light diffusion device, wherein the LED chips are arranged on the circuit board, and the light diffusion device is arranged on the circuit board and used for diffusing light emitted by the LED chips. The LED light bar is used for the backlight module and the display device needing avoiding the hot spot phenomenon.