A driving method for driving a plasma display unit of a plasma display panel. The plasma display unit includes two electrodes, and the plasma display unit is filled with ionized gas. A driving circuit drives the ionized gas back and forth between the two electrodes to cause the plasma display panel to emit light. The driving circuit includes a rating source receiver and an energy-storing current source whereby the rating source receiver is able to receive and supply a rating current. The driving method first involves the rating source receiver charging. A first electric potential difference thus occurs between the two electrodes of the plasma display unit to allow the ionized gas within the plasma display unit to discharge. While the ionized gas is discharging, the plasma display unit is supplied with a compensation current to prevent an electric potential difference drop.