Abstract: 1. Agricultural systems engineering is the application of ;systems engineering to the management of macro-agriculture, a modern technique in the organization and administration of the movement of macro-agriculture economics and of the productive activities of micro-agriculture.2 . Agricultural systems engineering is a branch of systems science, whose main objects of study are the logic, information and program in the field of agriculture, belonging to the category of "soft" science.3 . Apart from the common basic theories for systems engineering such as operations research and computer science, agricultural systems engineering has its own specific basic theory, i. e., farming science, which studies the laws of conducting macro-agricultural production.4. The objective of agricultural systems engineering is to speed up macro-agricultural production so that more material wealth can be created and to improve the systems of nature in order to create a desirable, reasonable and highly efficient ecological system.5 . Viewed from the standpoint of systems science, macro-agricultural production system has characteristics with complex mechanism, i. e., regionalism, periodicity, comprehensiveness, systematism, orderliness and being subject to chain reactions. In conducting agricultural production, one should bear in mind all these characteristics and the actual conditions of the specific locality and time, analyse the contradictions and coordinate relevant links and factors, going forward step by step in dynamic equilibrium.