The　FeCoCrNiAl　high-entropy　alloys　(HEA)　was　used　as　binder　of　the　Ti(C,　N)-TiB2　composite　cermets.　The　Ti(C,　N)-TiB2-FeCoCrNiAl　HEA　composite　cermets　were　successfully　fabricated　by　mechanical　alloying　(MA)　and　vacuum　hot-pressing　sintering　(VHPS)　at　different　sintering　temperatures.　The　microstructure,　room-temperature　hardness,　fracture　toughness,　bending　strength,　high-temperature　hardness　and　oxidation　behavior　were　investigated　by　scanning　electron　microscopy　(SEM),　transmission　electron　microscopy　(TEM),　Vickers　hardness　testing,　indentation　method,　three　point　bending　method,　high-temperature　vacuum　hardness　testing　and　cyclic　oxidation.　For　the　Ti(C,　N)-TiB2-HEA　composite　cermets,　apart　from　Ti(C,　N)　and　TiB2　phases,　also　a　minority　Fe2B　were　detected　in　the　XRD　patterns.　TEM　observation　revealed　that　the　structure　of　the　HEA　binder　was　a　solid　solution　where　the　Ti(C,　N)　and　TiB2　were　tightly　bound.　The　Ti(C,　N)-TiB2　composite　cermets　with　a　Ni/Co　binder　was　selected　as　a　reference.　The　experimental　results　indicated　that　the　composite　cermets　with　the　HEA　binder　possesses　excellent　oxidation　resistance.　This　is　attributed　to　the　formation　of　a　continuous　and　dense　external　oxide　scale　and　TiO2　layer　that　effectively　impede　inward　oxygen　transport,　which　leads　to　a　remarkable　improvement　in　the　oxidation　resistance.　The　Ti(C,　N)-TiB2-HEA　composite　cermets　sintered　at　1500　degrees　C　showed　excellent　fracture　toughness　of　7.9　+/-　0.1　MPa.m(1/2).　And　the　Ti(C,　N)-TiB2-HEA　composite　cermets　sintered　at　1550　degrees　C　showed　excellent　hardness　and　bending　strength　of　1977.3　+/-　20　HV10　and　768.6　+/-　20　MPa,　respectively.　The　high-temperature　hardness　of　the　HEA　binder　composite　cermets　was　993.7　+/-　30　EIV20,　which　was　superior　to　the　Ni/Co　binder　value　of　668.1　+/-　30　HV20　at　1000　degrees　C.