The present invention aims to provide a plasma display panel that can be driven at low voltage and can offer favorable image display performance. In order to achieve the aim, on a surface of the front panel 1 on which the display electrode 5 is formed, the protective layer 7 made by using a crystalline oxide material that contains a crystalline oxide selected from the group consisting of (i) at least one of SrCeO3 and BaCeO3 and (ii) a solid solution of SrCeO3 and BaCeO3 is disposed so as to face the discharge space 14. By using the crystalline oxide material that contains the crystalline oxide selected from the group consisting of (i) at least one of SrCeO3 and BaCeO3 and (ii) a solid solution of SrCeO3 and BaCeO3, chemical stability can be improved without reducing secondary electron emission efficiency. A PDP capable of lowering drive voltage compared with a case where MgO is used can be obtained by using the crystalline oxide material.