It reviewed the research progress of laser cladding technology in recent years,systemati-cally compared and summarized the traditional laser cladding and ultra-high speed laser cladding processes,and compared the key performance indicators of coatings prepared by the two process-es.It also sorted out the preparation process of metal alloy powder and cladding materials,and summarized the measures to suppress cracks in the cladding layer.Finally,the shortcomings of the laser cladding currently used in coating were highlighted,and future development directions were outlined.