The invention relates to a spherical bearing-linked tension-torsional extensometer. The spherical bearing-linked tension-torsional extensometer comprises an upper machine plate, a lower machine plate, ceramic thimbles, a middle axle rod, a horizontal sensing sheet, a vertical induction sheet, and a current vortex range finder, the upper machine plate and the lower machine plate are arranged in a parallel mode, the ceramic thimbles are respectively and fixedly arranged at the front parts of the upper machine plate and the lower machine plate, the spherical bearings are arranged on the upper machine plate and the lower machine plate, two ends of the middle axle rod are fixed with the inner sleeves of the spherical bearings of the upper machine plate and the lower machine plate, the horizontal sensing sheet and the vertical induction sheet are arranged at the tail part of the upper machine plate and the lower machine plate, and a horizontal current vortex range finder and a vertical current vortex range finder which correspond with the horizontal sensing sheet and the vertical induction sheet are arranged at the tails part of the upper machine plate and the lower machine plate. The spherical bearing-linked tension-torsional extensometer has scientific and reasonable structure and design, the spherical bearing is employed, the spherical bearing-linked tension-torsional extensometer bears the circumferential and axial displacement, and length deformation measurement of the to-be-measured object along the axial direction and the angle deformation measurement along the circumferential direction are realized.