A plasma display device is disclosed. In one embodiment, the plasma display device includes a plasma display panel on which an image is displayed, a chassis base coupled to the rear side of the plasma display panel and formed of a material in which plastic and a conductive material are mixed, and at least one circuit board mounted on the rear side of the chassis base and driving the plasma display panel. According to embodiments of the present invention, a lightweight plasma display device can be manufactured, since the weight of the chassis base can be reduced by manufacturing the chassis base from a mixed material of plastic and a conductive material. Also, the grounding and EMI shielding of the circuit board or a signal transmitting member can be achieved.