In　this　study,　FeCrNiMox　coatings　(x　=　0,　0.25,　0.5,　0.75,　1.0,　in　molar　ratio)　were　fabricated　on　45#　steel　using　high-speed　laser　cladding　technology.　The　objective　is　to　investigate　the　effect　of　Mo　content　on　microstructure　and　tribological　performance　of　the　FeCrNiMox　coatings.　The　results　reveal　that　the　sigma　phase　precipitates　at　the　grain　boundaries　of　the　FCC　matrix　phase　when　the　Mo　molar　ratio　exceeds　0.75.　Moreover,　coatings　with　high　Mo　content　demonstrate　improved　hardness　and　tribological　performance　due　to　solid　solution　strengthening,　precipitation　hardening,　and　grain　refinement.　Optimal　coating　performance　occurred　at　Mo　molar　ratio　of　0.75,　as　excessive　sigma　phase　precipitation　at　higher　Mo　levels　results　in　crack　formation,　which　reduces　the　coating　density　and　properties.