Abstract: The present invention provides a backlight module and a lamp installation device thereof. The backlight module comprises a plurality of lamps therein, and two ends of each of the lamps are clamped, positioned and electrically connected to one of the lamp installation devices, respectively. Each of the lamp installation devices comprises: a mounting end, a lamp clamping portion and an elastic conductive plate. The mounting end is used to mount the lamp installation device on the backlight module; the lamp clamping portion has a pair of elastic clamping plates for engaging with one end of the lamp; and the elastic conductive plate is electrically connected to a terminal of the end of the lamp. The manufacture cost of the lamp installation device of the present invention is relatively low and the installation thereof is simple, while the lamp also can provide a better impact resistance.