To provide a method of making a protruding part or a recessed part on a paper cushion, with which a folding state of a fold formed by folding a plate can be kept with a simple technique without providing a reinforcing plate or a pasting margin plate.

Creases and cut lines are provided at required positions of a first paper board 10 to form a lower fold 19. Creases and cut lines are provided at required positions of a second paper board 20 to form an upper fold 29. The second paper board 20 is stuck onto the first paper board 10, and in addition while a folding state of the lower fold 19 which has been folded in a predetermined angle is kept, the upper fold 29 is stuck to an upper surface of the lower fold 19, whereby the folding state of the folds is fixed and kept.