To give a display shelf carrying easiness and assembling easiness by placing a right side board, left side board, ceiling part, and/or bottom board part piled up on a back board via a hinge and making it foldable.

Right and left side boards 2, 3 are connected to right and left side parts of a back board 1 via hinges 981 respectively so that right and left side boards 2, 3 are piled up on the back board 1 to the front face of the back board 1. Further, on the upper faces of the right and left side boards 2, 3 piled on the front face of the back board 1, a bottom board part 4 and a ceiling part 5 are piled placed on respective required positions. The bottom board part 4 is connected to a bottom board attaching part 40 via a hinge for the bottom board and the ceiling part 5 to a ceiling attaching part 50 via a hinge 83 for the ceiling part. The bottom board part 4 and the ceiling part 5 are respectively pushed up and down to open and both right and left side boards 2, 3 are pushed to open right and left respectively. Ball dowels equipped on the bottom board part 4 and the ceiling part 5 are engaged with ball dowel receiving parts respectively equipped on right and left side boards to fix and keep both right and left side boards 2, 3 to form the outer frame of this display shelf.