【Objective】The primary objective of this study is to fabricate high-performance Cu-matrix composites that can meet the enhanced performance requirements of braking systems in high-speed trains, arising from the increase in operational speeds.【Method】Utilizing the orthogonal experimental design, this study systematically investigates Cu-matrix composites with various proportions of Cu-Ni-Si-Cr alloy as the base material. The influence of Ni , Cr and Si in the alloy on the microstructure, mechanical properties, and tribological behavior of the Cu-matrix composites is thoroughly examined.【Results】The findings reveal that Cu-matrix composites with a Cu-7Ni-1.75Si-0.75Cr alloy base exhibit the highest hardness and strength, reaching 49.90 HBW and 171.98 MPa, respectively. An analysis of the orthogonal experimental results pertaining to friction coefficient and wear volume indicates that Cu-matrix composites with a Cu-7Ni-1.75Si-0.75Cr alloy base exhibit optimal overall performance. Specifically, the friction coefficient increases initially and then decreases with an increase in temperature within the range of 25~650 ℃, while the wear volume continuously increases. The highest friction coefficient is observed at 450 ℃. Furthermore, the wear mechanism transitions from mild abrasive wear to oxidative wear and abrasive wear. 【Conclusion】The utilization of the orthogonal experimental method for alloying copper matrix composites holds immense significance in enhancing their friction coefficient and wear resistance at elevated temperatures..