In response to the crack failure of a drive shaft of a type of motor subjected to high torque after a long period of overload operation, a remanufacturing study was conducted using laser cladding technology. In this paper, the remanufactured material was designed from the material composition of the motor drive shaft and the processing parameters were optimized. The results show that the Ni-Cr alloy powder was selected as the cladding material, and a cladding layer with good bonding properties, Excellent macroscopic morphology and mechanical properties were fabricated on the 30Cr alloy substrate via laser cladding technology under the parameters of laser power 2400 W, sweep speed 16 mm/s and powder feed rate 16 g/min., which can effectively extend the life of this motor drive shaft. The life of the motor drive shaft was effectively extended. The remanufacturing of the motor drive shaft not only saves resources but also improves the operation and maintenance efficiency of the motor.