OBJECTIVETo explore the influence of Bushen Yijing Capsule (BSYJC) on bone quality of cancellous bone in ovariectomize induced osteoporosis rats model.METHODSForty Wistar female rats, 10 months old, were randomly divided into 4 groups, the normal group, the model control group, the premarin treated and the BSYJC treated group, 10 in each group. The normal group was only sham operated and the other three were ovariectomy performed and treated starting at day 91 postoperationally for consecutively 90 days. Rats were sacrificed at the end of experiment, the second lumbar vertebra was taken out to determine bone density and contents of calcium, phosphorus and organic substances, and the third lumbar vertebra taken out to measure the bone density and biomechanics properties. Bone quality was evaluated with the above indices.RESULTSBSYJC could significantly raise the bone density, increase the contents of calcium, phosphorus and organic substances, and improve the biomechanical properties of the lumbovertebral bone in osteoporosis rats.CONCLUSIONBSYJC could improve the bone quality of the cancellous bone in ovariectomized rats.