A plasma display apparatus is disclosed. The plasma display apparatus includes a plasma display panel including an electrode, a voltage controller, a scan operating unit, and a driving signal supply unit. The voltage controller includes a switch unit for forming a set-down pulse gradually falling to a first voltage for a first duration of time of a set-down period and for forming the first voltage for a second duration of time of an address period. The scan operating unit forms a second voltage during the address period. The driving signal supply unit supplies the set-down pulse to the electrode during the set-down period, and supplies the first voltage and the second voltage to the electrode during the address period.