Achieving　high-quality　joining　of　silicon　carbide(SiC)ceramics　and　Inconel　718　alloy　has　become　a　significant　challenge　for　the　brazing　process,which　is　strongly　dependent　on　the　filler　material.A　novel　composite　interlayer　consisting　of　high-entropy　alloys(HEAs),HEA/Ni/HEA,was　proposed　to　reduce　the　formation　of　intermetallic　compounds　in　the　brazed　joints　of　SiC　ceramics　and　Inconel　718　alloy.A　reliable　SiC/Inconel　718　brazed　joint　was　produced　at　1120℃　for　60　min.The　results　showed　a　significant　reduction　in　the　number　of　NiSi　compounds　in　the　brazed　joint.The　brazing　seam　structure　near　SiC　side　was　filled　with　face-centered　cubic　phases　with　good　plasticity　and　soft　Cu-rich　phases　due　to　the　high-entropy　effect,which　effectively　suppressed　the　formation　of　intermetallic　compounds.The　maximum　shear　strength　of　the　brazed　joint　reached　88　MPa,showing　excellent　tensile　strength.The　results　provide　a　valuable　basis　for　improving　the　joint　quality　of　SiC　ceramics　and　metals　by　adding　high-entropy　alloy　fillers.