关键词: 粒计算, 粒计算体系, 四元, 四元模型

Abstract: This paper attempts to study granular computing system as a whole by adoption of the qualitative research method, ensuring the integrity of granular computing system to guide the research and development of granular computing. Through thorough research in longitudinally advancing and transversely absorbing aspects and development of granular computing, the paper explains the necessity of the advanced development of granular computing system based on the existing research results. The authors classify the whole development process of granular computing system into 3 stages：initial stage, intermediate stage（three-element model） and later stage（four- element model）, then build the four-element model, which is seen as three main forms：granulating thinking-orientation, granulating problem solving pushing-granulating information processing pulling and self- cooperation development. As a result, the authors expound and construct a new granular computing system in four elements as the core.

Key words: granular computing, granular computing system, four element, four-element model