(: This article learns the idea of ??intelligent collaborative office in the field of distributed artificial intelligence, and proposes a research idea of ??fieldbus intelligent building control system based on the idea of ??multi-intelligence (IA, IntelligentAgent). Through the analysis and discussion of the multi-agent building control system based on the field bus, it is concluded that the field bus intelligent building control system based on the multi-intelligence idea greatly improves the reliability of the system.)