Abstract: as one of the main failure forms of mechanical parts, wear failure causes huge energy expend and material loss. Laser cladding technology is one of the key remanufacturing technologies with the characteristics of high repair efficiency, excellent performance and green environmental protection. Considering the matching factors of thermal expansion coefficient, melting point and wettability between cladding layer and base material, iron-based alloy has become one of the main alloy materials for laser cladding remanufacturing. Combined with the latest relevant research results, the wear resistance of iron-based alloys fabricated by laser cladding is reviewed from the aspects of alloy composition, enhanced phase, laser cladding process parameters（laser power, scanning rate, powder feeding rate）, etc. The influence mechanism of alloy composition, enhanced phase and laser cladding process parameters on the wear resistance of iron-based cladding layers is systematically discussed. The wear failure mechanism of ironbased cladding layer is also introduced. Finally, the future development direction of high wear-resistant iron-based alloy coating by laser cladding is prospected.