The potato planting in China has the characteristics of large area, wide range and complicated geographical features. The mechanized potato planting is the most important technical link in the mechanized potato production, which has prominent problems in potato growing industry. The technology of the mechanization of potato planting includes key technologies of seed potato pretreatment, seed supply and conduction, seed pick and seed clearance. This paper analyzes the present situation, characteristics and restrictive factors of the mechanization of potato planting in China, summarizes the key technologies of the mechanization of potato planting, and the restriction, influence and difference between the two main cultivation methods of whole potato and diced seed potato planting technology in Mechanized potato planting. The research emphatically expounds the status and the development trends of potato grading, seed potato separation, zerospeed seeding, dynamic seedsupplying technology and equipment, and summarizes the representative potatogrowing machinery in China, Germany, the Netherlands, Belgium, the United States and other countries. Besides, the paper holds that the precise, highspeed and intelligent largescale potato seeding technology and equipment are the core direction of the development of the technology of mechanized potato seeding in China, which will provide reference for the industry in equipment selection, research and development and the development of potato planting machinery in China.