Objective The viscoelastic property of the cancellous bones of the femoral head of the fresh cadaver were studied. Methods the tensile stress relaxation experiment and creep experiment were done in three directions: Longitudinal N transverse and 45 degrees. Results The data of the tensile stress relaxation and creep of three directions were reported. The reduced stress relaxation and creep functions, the curves and the irregular functions and curves of the relations between the stress relaxation and creep' s quantities and angles were also reported. Conclusion The quantities of stress relaxation and creep of the cancellous bones of the femoral head in the longitudinal direction are greater than those in the other two directions and the cancellous bone of the femoral head is an anistropic material.