Abstract: The emergence of new high-entropy alloys has broadened the selection range of metal matrix compo-sites. In this study, carbide ceramic particles doped in Fe_49.5Mn₃₀Co₁₀Cr₁₀X_0.5 (X=B₄C, ZrC and TiC) high-entropy alloy composites are prepared by using arc melting technology, and the effects of three carbide ceramic particles on the microstructure and mechanical properties of composite materials were systematically studied. The results show that the doped carbide ceramic particles can refine the matrix grains, stabilize the fcc phase, and inhibit the formation of the hcp phase. Among them, B₄C ceramic particles have the most significant effect on refining grains and stabilizing fcc phase. The mechanical properties of the samples doped with ZrC and B₄C ceramic particles are lower than the matrix samples, which is attributed to the poor bonding between the ceramic particles and the matrix, and the appearing void defects at the interface. But TiC doped sample, the strengthening and toughening effect is significant, which is attributed to good interface bonding, fine grain strengthening, Orowan strengthening, and load bearing strengthening.