This paper introduces a testing method of the torsion of a big white rabbit radii and a small-size se1f-made torgue-angle-an automatic drawing device. According to torque-angle curves of the radii，the error of torque moment and the torsion angle is one percent and the error of torsional rigidity and energy absorbtion is two percent. The testing results show，there is certain difference in torsional properties between the rabbit left radius and its right radius in the normal condition，there is a more remarkable increase in the properties of magnetic therapy healing than those of natural hea1ing.