The wear resistance of materials is crucial in mechanical component design, but there has been limited research on the tribological behavior of WC-reinforced high entropy alloy(HEA) to date. Therefore, this study used fast hot pressing sintering to fabricate WC/AlCoCrFeNi2.1 metal matrix composites (MMCs). It was observed that: 1. The HEAs matrix had a biphase eutectic structure with FCC and BCC phases, while the interfacial layer consisted of M7C3 and M23C6 (M=Cr, W). 2. MMCs showed proportional increases in microhardness, nanoindentation and wear resistance with reinforced particle addition. 3. During frictional processes, an oxide film formed providing material protection, enhancing stability and reducing friction-induced losses. Adhesive wear, abrasive wear, and three-body abrasion were identified as primary types of observed wear.