Automatic continuous litchi surface polshing machine modeled on continuous polishing machine by head's improvement and program's transformation,Operation control system using PLC terminal control,through the LCD touch screen parameter settings,a grinding head lifting and polishing is controlled by pneumatic pressure,the size of demand in theset value can be adjusted,Grinding head of grinding speed and lateral plate feeding speed by frequency control and in the range of set valueset flexibly,this litchi surface polshing machine can automatically identify the thickness of slab with good perfoemance,processing safety,good processing effect and labor saving,it's a good choice for surface treatment.The equipment is automatically adjusted and the depth adjusted is the same.Low cost,low rate of broken,high utilization rate of slab.specification,irregular plate,10mm sheet can do litchi surface.