In order to provide the biomechanical parameters, research on the osmunda cinnamomea which is a kind of plant full of Se was conducted. Sampling the wild osmunda cinnamomea at Wangqing county mountainous area of Jilin Province, the pull, compression, impact, stress relaxation and creep tests on the samples were done respectively. The maximum pulling load, stress, strain, modulus of elastics, bending moment, stress, impacting work, tenacity, the stress relaxation and creep data and curves were obtained. With tri-parameter model fitting the experimental data of the stress relaxation and creep formulas were obtained. Osmunda cinnamomea is of good biomechanical properties and is a kind of viscoelastic material.