Here disclosed is a method of manufacturing a plasma display device in which a panel is easily separated from a holding plate if the separation is required. In the method of manufacturing a plasma display device having a panel, in which a pair of substrates having transparency at least on the front side is oppositely disposed so that discharge space and discharge cells are formed between the substrates, and a metallic holding plate that supports the panel via a thermal conductive member, the present invention employs a thermal conductive member made of a pull-to-remove adhesive. The adhesive is applied to the panel or the holding plate, and the panel and the holding plate are put together. After that, the adhesive is cured by application of pressure and heat.