The present invention provides a plasma display apparatus which can improve a driving waveform and enhance driving margin and optical characteristic when motion images are outputted. The plasma display apparatus includes a first electrode formed in a panel, and a first electrode driver configured to apply a driving waveform to the first electrode, wherein the first electrode driver applies different driving waveforms when motion images are output and when still images are output. In the plasma display apparatus constructed as described above according to the present invention, images are divided into still images and motion images. In the motion images, as a motion change increases, a driving waveform is varied by decreasing the number of set-up signals or sustain pulses, or by lowering aset-up voltage. Accordingly, the distortion of an image occurring as waveforms are varied can be minimized. Furthermore, there are advantages in that the margin of a driving signal can be enhanced, heat generated from a panel can be reduced, and damage to the panel can be prevented. In particular, there is an advantage in that a contrast characteristic of an image can be improved.