In a heat-radiating structure and a plasma display device including the same, an uneven shape is formed in a bed of a chassis base, and a heat sink is installed on a cover plate such that heat is radiated toward both sides of the cover plate. The heat-radiating structure includes: a signal transmission unit to which an integrated circuit is attached; a chassis having a bed for supporting the signal transmission unit formed therein; and a cover plate which covers the signal transmission unit and having a heat sink formed therein. The plasma display device includes: a plasma display panel for realizing an image by exciting a phosphor using a gas discharge; a signal processing unit for converting image data inputted from an external source into a driving signal for driving the plasma display panel; a signal transmission unit which transmits the driving signal to the plasma display panel, and to which the above-described integrated circuit is driven is attached; a chassis which supports the plasma display panel and having the above-described bed formed therein; and a cover plate as described above.