Abstract: After the main shaft of the fan wears out, grooves are easily formed locally on the main shaft, affects the normal operation of the fan.To repair, remanufacture and utilize it Repair of worn fan spindle using laser cladding technology. Tested the hardness, mechanical properties, microstructure, and other properties of the repaired samples using laser cladding technology. The results indicate that using optimized process parameters: laser power 2500W , scanning speed 20mm/s Powder delivery speed 2.5r/min, conducted laser cladding repair. The surface hardness of the sample is about 295HB, the surface hardness of the sample has been improved. The tensile strength of the sample is 832MPa, the yield strength is 722MPa, and The forward impact absorption energy is 93J, the lateral impact absorption energy is 74J, and the backward impact absorption energy is 84J, all meet the relevant requirements of the base material. The coating has no defects such as pores or cracks, uniform structure.It can be seen that the laser cladding process is feasible for repairing the fan spindle.