Abstract: A lighting display system having an anti-theft feature has a mounting structure having at least one mounting plate having a front side and a back side, a first conductor line carried by the at least one mounting plate, a second conductor line carried by the at least one mounting plate and spaced apart from and extending parallel to the first conductor line, a plurality of first holes traversing the at least one mounting plate adjacent to the first conductor line, a plurality of second holes traversing the at least one mounting plate adjacent to the second conductor line, and a power supply terminal electrically connected to the first and second conductor lines and which is connectable to a power supply, and a plurality of luminescent bodies, wherein each of the plurality of luminescent bodies has a first contact plug exposed at a back side of the luminescent body and connected to the first conductor line by a first fixing member being in threaded engagement with the first contact plug, a second contact plug e