The present invention discloses a plasma display apparatus, including a plasma display board containing a first and a second electrodes; a first drive part, for providing a last maintaining signal for the first electrode to ascend to a third voltage in a (n-1)th subsegment; a second drive part, for providing an erasure signal for the second electrode to gradually drop from a fourth voltage less than the third voltage to a fifth voltage in the (n-1)th subsegment after providing the last maintaining signal, and providing a building signal for the second electrode to gradually ascend to a sixth voltage higher than the third voltage in a nth subsegment. The invention may form uniform wall electric charge to cause correct addressing discharge.