Mechanization starting after invading agricultural capitalism, its development in Europe and the United States generally has gone through three phases: ① semi-mechanized stage. Generally in the mid-19th century to the end. Feature is widely used in agricultural production, animal traction, simple agricultural machines. Basic mechanized stage II. Largely at the beginning of 20th century until in the 1950 of the 20th century. Characteristics of main job is the main crop used tractors farm machinery. ③ fully mechanized (or highly mechanized) phase. After about began in the 1950 of the 20th century. Character is in agriculture, forestry, animal husbandry and fishery sectors on all aspects of, and prenatal and post-natal Department, extensive use of more advanced agricultural machines. Since in the 1980 of the 20th century, due to the increased usage of computers in agriculture and development of agricultural mechanization is automation. Third countries and regions in the world, just after the second world war, in varying degrees, began to use agricultural machines. But from political, economic and technological factors such as, to date, most countries (regions) of the low level of mechanization.