A plasma display panel (PDP) with improved address voltage margin and reduced noise brightness such as discharge light or background light during an address discharge. The PDP includes a plurality of barrier ribs between a front substrate and a rear substrate to define a plurality of main discharge spaces and a plurality of auxiliary discharge spaces along a stepped surface of the barrier ribs. The auxiliary discharge spaces provide a shorter discharge path than the main discharge spaces. Address electrodes are provided on the rear substrate for generating address discharges together with the scan electrodes on the front substrate at locations adjacent to the auxiliary discharge spaces. Phosphor layers are respectively formed in the main discharge spaces, and a discharge gas is injected in the main discharge spaces and the auxiliary discharge spaces.