The utility model provides an LED backlight module group, which comprises a light guide plate, an LED lamp strip, a scattering netted dot array arranged on the bottom surface of the light guide plate, and a printing ink layer that clings to the lower surface of the light guide plate. The LED backlight module group is characterized in that one surface of the printing ink layer with its back onto the light guide plate adopts an inwardly concave curved surface structure, while the axis of the curved surface structure is parallel to the LED lamp strip. Through improving the structure of the printing ink layer, the uniformity of the LED light luminance is realized.