The　work　aims　to　prepare　in-situ　carbide　enhanced　high-entropy　alloy-based　cladding　layers,　study　the　microstructure　and　properties　of　the　cladding　layers,　and　then　provide　the　experimental　example　and　theoretical　basis　for　further　application　of　high-entropy　alloys　and　their　composites　in　surface　engineering.　In-situ　VC　reinforced　CoCrCuFeNiMn(VC)x(x=0,　0.1,　0.2,　mole　ratio)　high-entropy　alloys　cladding　layers　were　prepared　on　Q235　steel　substrate　by　plasma　cladding.　Phase　composition,　microstructure　and　microhardness　of　the　cladding　layers　were　investigated　by　XRD,　OM,　SEM,　TEM　and　microhardness　tester.　CoCrCuFeNiMn(VC)x(x=0.1,　0.2)　cladding　layers　were　composed　of　solid　solution　matrix　phase(FCC1+FCC2)　and　VC　enhanced　phase.　VC　was　in　granular　or　petaloid　shape　and　mostly　deposited　in　the　interdendrite　and　only　a　small　amount　was　precipitated　in　the　dendrite.　From　TEM　results,　the　interface　between　in-situ　synthesized　VC　and　substrate　was　clean　without　any　other　reacting　products　and　conformed　to　the　interface　characteristics　of　the　in-situ　composite　material.　In　a　certain　region　of　(x=0~0.2),　the　microhardness　of　cladding　layers　increased　as　the　VC　content　went　up.　In-situ　synthesized　VC　reinforced　CoCrCuFeNiMn　high-entropy　alloy-based　coatings　can　be　prepared　on　Q235　steel　substrate　by　plasma　cladding.　Cladding　layers　have　a　good　metallurgical　combination　with　the　substrate　and　in-situ　VC　plays　a　significant　role　in　strengthening　cladding　layers.　©　2018,　Chongqing　Wujiu　Periodicals　Press.　All　rights　reserved.