Objectives Research on the compression viscoelasticity property of normal white rat and the osteoporosis femoral compression viscoelasticity property caused by alltransretinois acid to provide bioviscoelastic mechanics parameters for clinic. Methods Choose 30 Wistar white rats of 6-month old with 175-245gand randomly divided into 2 groups with 15 as normal group and 15 as model group alltransretinois acid was given (70mg·kg-1·d-1) to the model group two weeks. At the end of Week 12, execute the model rats to take the femora for telescope, stress relaxation, creep experiments. Results The femora stress relaxation,creep data and the curves of both the normal and model groups were received. The normalization for the stress relaxation and crept experimental data were made to get their functions and the curve. Conclusions The 7200s stress relaxation and the amount of creep indices in the model set were much lower than that of the normal group (P<0.05).