After developed countries, such as America, Britain, Canada, has experienced farming mechanization in the 1940s and 50s, and the basic mechanization of livestock, poultry and aquaculture in the 60 and 70s, the planting and breeding in the 90s has entered the stage of high mechanization and modernization. Agricultural machinery is to a large, high speed, low consumption, automatic and intelligent development. Today, the United States is one of the highest degree of modernization of agricultural production in the world, and it has mostly realized the regionalization and specialization, mechanization, socialization, commercialization, and network information. Some of the farmers often run thousands of hectares of land, and they must use mechanical operation in the before, during or after of each agricultural production. This is fully realized mechanization. The United States has become one of the highest agricultural labor productivity country in the world.

With the development of modern science and technology, many new technologies has been applied in agricultural machinery. In addition, many new materials, new technology is also widely used in agricultural machinery. That is the tendency of development of agricultural machinery.