Abstract: With the rapid development of Chinese potato industry, the research on the planting and harvesting equipment of potato original seeds has developed rapidly. At present, potato harvesting in China is mainly manual excavation and mechanical harvesting.In order to reduce labor intensity, major breakthroughs have been made in harvesting and grading equipment. With the use of potato harvesting equipment, the harvesting efficiency has been significantly improved. This paper studies the original seed harvesting and grading equipment of potato in order to reduce the harvesting cost.