Abstract: A plasma display and a driving method thereof are disclosed. The plasma display includes a scan electrode, a scan integrated circuit, and a voltage supply unit. The scan integrated circuit applies a scan voltage and a non-scan voltage to the scan electrode during an address period. The voltage supply unit gradually decreases a voltage at the scan electrode to a first voltage during a reset period and supplies the scan voltage to the first terminal during the address period. The voltage supply unit includes a voltage generator that is connected to the first terminal to generate a second voltage by using the scan voltage during the reset period, and a first capacitor that is connected to the voltage generator, the first terminal, and a power source input terminal of the scan integrated circuit, and uses the second voltage supplied from the voltage generator to drive the scan integrated circuit.