To map the intellectual structure of electronic commerce research in this century, this study identified the most important publications and the most influential scholars as well as the correlations among these scholar's publications. In this study, bibliometric and social network analysis techniques are used to investigate the intellectual pillars of the electronic commerce literature. By analyzing 28,470 citations of 1,333 articles published in SSCI and SCI journals in electronic commerce area between 2000 and 2006, this study maps an invisible network of knowledge of electronic commerce studies. The results of the mapping can help identify the research direction of electronic commerce research and provide a valuable tool for researchers to access the literature in this area.