To provide a multipurpose structure which can be used effectively as a lighting shade, a ceiling material, a decorative wall, the material of an artistic object, a container, a puzzle, etc.

Triangular plate parts 3a, 3b, 3c, 3d, consisting of four isosceles triangles whose bottoms are four sides 2a, 2b, 2c, 2d of a square plate part 2 and each of which has a predetermined apex angle between the two equal sides, are formed integrally with one another, and the pair of opposite triangular plate parts 3a, 3c is folded to one side of the square plate part 2 and the other pair of opposite triangular plate parts 3b, 3d to the other side of the square plate part 2. Also, a structure unit 1 is formed in which adjacent triangular plates folded in different directions form a straight line at the adjoining edges of their respective two equal sides, and the plurality of structure units 1 are combined into a multipurpose structure in which the adjacent triangular plate parts folded in different directions are joined together at the rectilinear parts (x), (y) of their respective two equal sides.