The role of the booth staff at trade shows has emerged as an important issue for trade show success. This purpose of this study is two-fold. First, this study explores the structural relationship between exhibitors` on-site activities and their respective performance at the trade show. The second purpose is to investigate moderating roles of staff expertise and empowerment in the relationship between exhibitors` on-site activities and the trade show performance. This findings indicate a positive relationship between exhibitors` on-site activities and trade show performance is partially proved. It shows that on-site non-seeling activities have positive relationships with trade show performance. Statistical significances exist only in the role of staff expertise between non-selling activities and trade show performance within groups, but are not found in the differences of path coefficients between groups using the multi-group analysis. Overall, findings of this study enrich the theoretical development in the relationship between exhibitors` on-site activities and trade show performance and provide important implications of staff`s expertise and empowerment for exhibitors.