PurposeThis paper aims to develop a partner selection approach for the high-speed rail (HSR) firms from the perspective of achieving competitive advantage in the international competitive bidding sphere.Design/methodology/approachThe current study developed a partner selection approach based on the evolutionary game theory. Firstly, the current study identified the influencing variables and logical formation path of competitive advantage on the international HSR project by literature review and case analysis. After that, a pay-off model was developed based on the theoretical foundation. Meanwhile, the evolutionary stable strategy was analyzed for different combinations of initial pay-offs.FindingsA real-world case was simulated to verify the effectiveness of the developed approach. The simulation results secured support from three industry professionals, indicating the developed approach is valid.Originality/valueThe current study can help HSR firms to select their partners and develop a cooperation strategy from the perspective of winning awards. Also, the proposed approach is based on the advantage driving variables and formation path, which can contribute to HSR firms' understanding of the sources of competitive advantage.