Abstract
The characteristics of human mind are summarized up after the structure, functions and the working procedure of the eight consciousnesses and the human knowledge structure in consciousness-only psychology have been introduced. The limit of artificial intelligence, processing the formalized partial information, is proposed based on the analysis of elements of human intelligence simulated with computers and the development tendency of programming languages. The digital world model and the relationship among the seeds world, the reality world and the pattern world have been put forward after the position of the digital world (AI) in the human mind structure is discussed. AORBCO model , a formalized method with which the digital world is described has been advanced. The elements of AORBCO model-Agent, Object and Relationship have been defined after the investigation of AI research. It is the conclusion of this paper that AORBCO model is a theoretical basis for integrating the methods used in AI and making computers more intelligent.