This article performed a model of osteoporosis rats using the method ovariectomy and observed efficacy Tianchang Capsule on treatment rats. Comparing effect with positive drug to explore mechanism in postmenopausal osteoporosis. Female SD were randomly assigned 6 groups (10 each group): control (sham-treated), OVX (by ovariectomy), OVX+AL ovariectomy, received alendronate sodium), OVX+LTC low d...