Abstract: On the basis of the intention of type optimization and technique system integration on efficient utilization of agricultural resources of auxiliary expert system（ARAES）, this paper discussed the design on ARAES. Based on analysis of Macroobjects and concrete targets of ARAES, the system component was expounded in the aspects of person, hardware, software, database, knowledge base, modelbase, and methodbase. Two types of system functions of ARAES were described, one was the basic function, and another was the application function. Four key problems were discussed, and primary conculation was made.