To improve constructibility and functions by combining panels in which the surface of a laminated curved fiberboard is coated with a resin and building a curved surface building.

A laminated curved surface fiberboard panel is formed by superposing single-sided fiberboards, crossing alternately their flute directions, using their bendability. Subsequently, the surface of the panel is coated with a resin to make it water resistant and strong, and if flame resistance is required, a gypsum board or the like is pasted to the surface of the panel. When joining panels during construction, joints are connected by hardware like bolts and an adhesive and the entire curved surfaces are integrated by filling a sealing compound. Subsequently, when using the panels as concrete forms, form materials are processed at a plant to simplify field construction, whereby a curved surface building can be built easily and inexpensively, artistry can be improved, the recycling rate of used paper can be increased, in addition the quantity of waste building materials disposed of can be reduced significantly and the heat insulating property can be improved.