Abstract: Ultrahigh-speed laser cladding (UHLC) technology is a surface modification technology developed in recent years, which is favored by scholars at home and abroad because of its low dilution rate, small heat-affected zone and high efficiency. The article firstly introduces various surface modification techniques and compares them; secondly, it analyzes the materials used in UHLC, numerical simulation and experimental research of UHLC; thirdly, it elaborates the differences in microstructure and properties of coatings prepared by traditional and UHLC, and the practical application of UHLC; finally, it reviews the current problems of UHLC, and gives an overview of its application. Finally, the current problems of UHLC are summarized, and the development trend of UHLC is expected to provide reference for the subsequent experimental research.