Abstract: Based on basic characteristics of grid and P2P，using their complement each other，a hybrid model of grid and P2P with three-layer is presented，and a reality of the framework for the model is given.The management mechanism of peer and the functions reality of the model are discussed.The problems of single point invalidation，searching efficiency and load balance can be solved by the model ，and the extensibility is enhanced in the grid system.

摘要： 根据网格和P2P技术的基本特征，利用它们之间的互补性，提出了一种三层的网格和P2P混合模型，并给出了实现这一模型的基本构架。讨论了该模型中的节点管理机制以及网格系统模型的具体功能实现。该模型能有效解决网格的单点失效、资源搜索效率和负载均衡等问题，同时增加了网格的扩展性。