Abstract: 【Objective】 Copper matrix composites are widely used in aerospace, rail transportation, and advanced industrial equipment due to their excellent electrical and thermal conductivity combined with favorable mechanical properties. However, the intrinsic low strength, hardness, and wear resistance of copper severely limit its application under high load and high-temperature service conditions. High-entropy alloys(HEAs), characterized by high mixing entropy, lattice distortion, sluggish diffusion, and cocktail effects, exhibit superior strength, thermal stability, wear resistance, and fatigue resistance. This review aims to systematically summarize the research progress on HEA-reinforced copper matrix composites, clarify their strengthening mechanisms, and evaluate their processing routes and future development potential.【Method】 Based on extensive domestic and international literature, this paper reviews and compares the effects of different reinforcement types in copper matrix composites, including ceramic particles, metallic particles, and intermetallic compounds, with a particular focus on HEA reinforcements. The influence of HEA composition, phase structure(FCC/BCC), particle content, size, and distribution on the microstructure and properties of Copper matrix composites is analyzed. In addition, typical fabrication techniques such as powder metallurgy, spark plasma sintering, mechanical alloying, additive manufacturing, and casting processes are summarized, with emphasis on interfacial characteristics and element diffusion behavior between HEAs and the copper matrix.【Result】 Compared with conventional ceramic and metallic reinforcements, HEAs demonstrate better interfacial compatibility with copper due to their similar elastic modulus and thermal expansion coefficient, resulting in improved load transfer efficiency and thermal stability. The incorporation of HEAs effectively enhances the hardness, strength, and wear resistance of copper matrix composites through multiple synergistic strengthening mechanisms, including direct load-bearing reinforcement, grain refinement strengthening, dispersion strengthening, and solid solution strengthening induced by element diffusion. However, excessive HEA content may lead to reduced density, electrical conductivity degradation, and interfacial bonding deterioration, indicating the necessity of optimizing reinforcement fraction and processing parameters.【Conclusion】 High-entropy alloys represent a promising class of reinforcements for developing high-performance copper matrix composites. Rational design of HEA composition, control of particle size and volume fraction, and optimization of fabrication processes are crucial for achieving a balance between mechanical performance, tribological behavior, and electrical conductivity. Future research should focus on systematic interface engineering, diffusion-controlled sintering strategies, and the establishment of quantitative relationships between HEA reinforcement parameters and composite properties, providing theoretical guidance for the design of advanced copper-based composite materials.