This purpose of the paper is to examine the effects of information and communication technology (ICT) and product complexity on involvement of supply chain members and supply chain integration, and whether more leads to superior supply chain performance. Literature of involvement of supply chain members, supply chain integration and performance were fully reviewed. The ICT application and product complexity were also studied. The model and hypothesized relationship are empirically tested using the structural equation modeling (SEM) approach. The results of this study showed that ICT and product complexity all positively influence upon involvement of supply chain members and supply chain integration, and further have positive effects on supply chain performance. In today's highly dynamic and global competitive environment, manufacturers in Taiwan should accelerate ICT application and product development to enhance involvement of supply chain members and supply chain integration. Effective management of I CT and product complexity can increase involvement of supply chain members, supply chain integration, supply chain performance, and long-term competitive advantage.