After temporary competitive advantage (TCA) being proposed, this concept has received extensive attention from academia and industry. For international HSR contractors, how to form their TCA and win out over the competition for new projects is crucial, while only few studies focus on this issue. The aim of this research is to develop a TCA system that reflects the characteristics of high-speed rail (HSR) contractors from corporation and project dimension. At first, exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) were conducted to explore and examine the key drivers and their relationships with contractors' TCA. The results revealed that experience-mining advantage was the most important factor of the six common factors. Next, common factors were divided into three dimensions and discussed in depth, including resource-based TCA (i.e., technical resource and social image) which had the highest significance, followed by performance-based TCA (experience-mining advantage and risk-controlling