The invention discloses a device for measuring creep of a torsion bar. The device for measuring creep of the torsion bar comprises a base, a front bracket, a rear bracket, a front joint, a rear joint, a limiting screw, an index dial and a pointer, wherein the front bracket and the rear bracket are symmetrically mounted on two ends of the base; a threaded through hole is formed in the upper end surface of the front bracket; the two ends of the torsion bar are inserted into through holes of the front joint and the rear joint respectively; the front joint is not fixed at the periphery of the front bracket; the rear joint is fixed at the periphery of the rear bracket; a through hole is radially formed in the front joint; when the torsion bar rotates along with the front joint, the through hole of the front joint is just coaxially aligned at the threaded through hole in the upper end surface of the front bracket; the limiting screw is screwed into the threaded through hole and the through hole of the front joint, so that the torsion bar maintains a fixed angle; the index dial is mounted on the front end surface of the front bracket; the pointer is mounted at the end part of the front joint; the pointer rotates along with the rotation of the torsion bar; the creep is read by the index dial which is indicated by the pointer. The device for measuring the creep of the torsion bar is simple in structure, small in occupation area, easy to manufacture, easy in measurement and high in accuracy; a pure mechanical measurement manner is adopted; the measured results are intuitive.