Abstract: In view of the worldwide great development of agriculture and the aggravated environment during the 20th century, the tendency and distinguishing feature of agriculture and agricultural engineering science and technology development of 21st century was emphatically pointed out in this paper． It is consequently indicated that sustainable development is a general trend of agriculture in the world. In the light of the development of agriculture and act in accordance with the national conditions the target and direction of agricultural engineering development was expounded.