Wire　laser　direct　energy　deposition　enables　the　mass　production　of　large-scale　industrial　components　and　parts.　However,　energy　utilization　efficiency　is　limited　in　conventional　wire　laser　material　deposition　to　avoid　keyhole　defects,　resulting　in　a　low　deposition　efficiency.　This　work　presents　a　high-efficiency　wire　laser　material　deposition　process　that　increases　energy　utilization　by　generating　a　keyhole　in　the　filler　wire,　which　can　also　avoid　the　keyhole　defects　in　the　deposited　sample.　The　influence　of　process　parameters　on　deposition　quality　and　efficiency　was　thoroughly　examined　to　determine　the　process　window.　A　high　deposition　efficiency　of　0.87　kg/(h　kW)　for　316L　stainless　steel　was　achieved　with　a　laser　power　of　3　kW,　approximately　three　times　that　of　the　conventional　wire　laser　material　deposition　process.　The　defect-free　multitrack　and　multilayer　deposition　demonstrated　the　feasibility　of　our　proposed　high-efficiency　process.