A method of manufacturing a plasma display panel (PDP) in which a priming particle emitting layer containing magnesium oxide crystal powder is arranged, the plasma display panel both achieving improvement effects of generation of clusters of magnesium oxide crystal and discharge delay. A typical embodiment of the present invention is a method of manufacturing a PDP in which a priming particle emitting layer which contains magnesium oxide crystal powder subjected to a high-temperature heating treatment is arranged to be exposed to a discharge space, wherein, in a thermal treatment process of raw material magnesium oxide crystal powder, the high-temperature heating treatment is performed after shapes and sizes of the magnesium oxide crystal powder are uniformed.