对网格安全问题的研究是网格计算中的一个热点问题。通过对网格环境下安全需求和 网格基础设施GSI 的分析,介绍了一种新的基于知识库的网格安全体系结构,并对这一安全结构进行了分析。 关键词:网格;安全;知识库 Abstract: Grid security research is a hotspot in grid computing.Via the analysis of the special requirements about security in the grid environment and the characteristics of Grid Security Infrastructure(GSI),this paper present a novel Grid security architecture based on knowledge base,then analyzes this architecture briefly. Key words:Grid; Security; Knowledge Base