Laser cladding technology is a new technology with high economic benefits. Laser and alloy powder act simultaneously on the metal surface to form a metallurgical bonding layer, thereby achieving the effect of repairing the workpiece surface and strengthening and extending the service life. High-performance alloy surfaces can be prepared on cheap metal substrates without affecting the properties of the substrate, reducing costs and saving valuable and rare metal materials. Compared with surfacing, spraying, electroplating and vapor deposition, laser cladding has the characteristics of small dilution, dense structure, good combination of coating and substrate, many suitable cladding materials, large changes in particle size and content, and good controllability. , can realize three-dimensional automatic processing with high processing quality. Therefore, the application prospects of laser cladding technology are very broad.