Remanufacturing and repairing damaged parts is an important way to recover huge economic and time losses, improve resource utilization, and realize the sustainable development of the national economy. Select alloy powders with excellent performance for laser cladding repair, analyze the macro/microstructure characteristics, hardness and wear resistance of the laser cladding layer, and then grind the cladding layer to realize the remanufacturing of the lathe spindle