To achieve swept-back, variable camber, and torsional deformation of the aircraft's deformable wing, The skeletal framework must be designed to accommodate significant deformation. The rotational re-entrant metastructure is composed of an inwardly concave octagon rotated 90° and extended ligaments. It relies on the extended straight arm ligaments to topologically fill the airfoil section in space to form a skeleton deformation structure. Based on the Mohr's theory, a theoretical model of the relative elastic modulus and Poisson's ratio of the rotational re-entry metastructures along three directions in space is established. The finite element model of the rotational re-entry metastructures were established by ANSYS software, and five rotational re-entry metastructures prototypes were processed by 3D printer technology. The theoretical, simulation and experimental results were compared respectively. The maximum relative error of the relative elastic modulus along the x, y and z directions was 9.88%, indicating the accuracy of the theoretical model and the simulation model. The effects of geometric parameters on the elastic parameters of metastructures were analyzed, and it was found that the aspect ratio and the structural Angle had a great influence on the mechanical parameters of Poisson's ratio, which could provide a theoretical basis for the application of deformable wing skeleton of aerospaceplane.