The surface contamination layer of large shaft parts will seriously affect the normal operation of the equipment and even cause huge economic losses.Therefore,it is of great significance to realize the surface damage detection and remanufacturing of waste large shaft parts through visual technology and laser cleaning.Aiming at the large shaft parts with large quality,large shaft diameter changes,porous surfaces and key grooves and other characteristics,a PLC-based automatic laser cleaning control scheme was proposed and designed,and the structure design of laser cleaning equipment,system assembly and PLC software programming design were completed.The composition and selection of the control system hardware were determined,a man-machine interactive interface was to used control commands and display data,and to reflect the working conditions of the laser cleaning system in real time.The results show that the system has controllable operability,the cleaning efficiency is greatly improved,and it can adapt to the cleaning operations of different shaft sections.