The utility model relates to a hollow elasticity torsion circle, including ring ontology, ring ontology is buckled along its length direction by long strip shaped metal piece and forms, ring ontology's both ends and flank inwards curl and form hollow chamber. The beneficial effects of the utility model are that: the utility model discloses a torsion circle novel structure is not because the existence in the hollow chamber of ring ontology flank just forms the enclosure space for the meeting produces the microcosmic dislocation of certain degree with ring ontology after its fore -and -aft direction wrench movement dislocation, thereby supports the torsion circle wholly to kick -back to initial condition, and the resilience effect is showing, non -deformable.