A plasma display panel includes a front panel including a front glass substrate, a display electrode formed on the substrate, a dielectric layer formed to cover the display electrode, and a protective layer formed on the dielectric layer; a rear panel facing the front panel so that discharge space is formed and including an address electrode in a direction intersecting the display electrode, and a barrier rib for partitioning the discharge space; and a seal material for sealing between the front panel and the rear panel at outer peripheries thereof. In the protective layer, a base film is formed on the dielectric layer and aggregated particles of metal oxide crystal particles are attached to the base film so that they are distributed over an entire surface of a region inside the seal material.