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The attention for the lightning protection of temporary buildings is always held throughout the emergency rescue by people. The limitation of GB50057 is simply analyzed by explaining the characteristics of temporary buildings, and the techniques of lightning protection devices installation for temporary buildings are judged and analyzed by the IEC62305 recommended method. The results indicate that the technological indexes of GB50057-1994 for buildings are inapplicable for temporary buildings, but the IEC62305 recommended method is applicable. The installation of lightning protection devices for temporary buildings is depended on their dimension and the parameters of lightning days. Based on these, the relationship between the lightning disaster risk of temporary buildings and their areas, perimeters, and the number of lightning days is given, which can be used as the theoretical basis of lightning protection device installation.