Abstract: The paper describes the importance of information to stimulate the development of science and technology ,society ,economy and agriculture , along with agricultural engineering .Based on present situation such as poorly equipped base information system of agricultural engineering , and the wide subject scope of agricultural engineering and its immenseproduced information, the paper indicates its importance and necessity of constructing “Agricultural Engineering Information Highway”. Then the concept and method of constructing such a highway is also considered . In the end, the rule of designing and the main construction graph of network is provided . 