Abstract: The study attempts to provide a structural equation model for the impacts of chain management practice on organizational performance using competitive advantage as mediator.Sample data for the study were collected from 177 organization in south -west and southChina and the relationship proposed in the framework was tested,and structural equation modeling approach has been employed to analyze the research model and hypotheses.The results show that supply chain management practice not only has a significant positive direct impact on competitive advantage and organizational performance,but also a significant positive indirect impact on organizational performance by competitive advantage;competitive advantage has a partial mediate effect between supply chain management practice and organizational performance.

Key words: supply chain management, competitive advantage, rrganizational performance, Structural equation model (SEM)