To provide a cylindrically developed structure having various developing patterns, which is capable of performing elongated/contracted development at large rates.

A cylindrically developed structure 1 is provided so as to be surrounded with a side wall 1A and capable of elongated/contracted developing for an entire shape. The side wall 1A is made by joining a plurality of segments (s...) in bent states and, with four adjacent segments where the joined sides intersect each other in one point set as one module, a plurality of closed modules bent while inner angles are reduced in close curve directions following bending in an axial direction and a plurality of open modules bent while inner angles are increased in closed curve directions following bending in the axial direction are combined, and by bending these modules, elongated/contracted developments are carried out in the axial direction and a diameter direction.