在概述教育城域网信息资源共享基本概念的基础上,论述了教育城域网信息资源共享网络模型,包括星型共享网络模型、树型共享网络模型、环型共享网络模型、网状共享网络模型,以南通教育城域网信息资源共享模型为实证,论述了环型加星型的混合型共享网络模型及其实现的组织保障机制。 Based on an overview of the basic concept of education metropolitan area information resource sharing, this paper discusses the education metropolitan area network information resource sharing model, including the star sharing network model, the tree sharing network model, the ring sharing network model, the mesh sharing network Model, taking Nantong Education Metropolitan Area Network Information Resource Sharing Model as an example, this paper discusses the hybrid model of ring-and-star hybrid network and the mechanism of its organization security.