Abstract: To enhance the friction reduction and wear resistance of MoAlB ceramics, silicon carbide whiskers (SiCw) were introduced as a reinforcing phase. MoAlB-based composites with varying SiCw contents were fabricated via a two-step sintering process combining pressureless sintering and rapid hot-pressing. The effects of SiCw content on the phase composition, microstructure, and room-temperature tribological properties of the composites were systematically investigated using XRD, SEM, and friction and wear tests. The results show that the composites consist primarily of MoAlB and SiCw phases, with no detectable reaction products formed, indicating excellent chemical and thermal compatibility between SiCw and MoAlB at 1200 °C. With increasing SiCw content, both the friction coefficient and wear rate of the composites first decrease and then increase. The optimal tribological performance is achieved at 10wt% SiCw, yielding a friction coefficient of 0.67 and a specific wear rate of 2.15×10-6 mm3·(N·m)-1. This improvement is mainly attributed to the high hardness of SiCw and its effective load-bearing role during sliding. However, excessive SiCw addition leads to whisker agglomeration, which deteriorates the wear resistance of the composites.