Abstract: According to the characteristics of grid environment，combined with the existing resource searching mechanism，the paper proposes a layered framework of grid resource searching mechanism.The grid resources are organized in two layers，grid virtual community layer and resource layer.In accordance with the resource attribute，the grid is divided logically.Based on the layered framework，according to the small-world theory，it proposes a resource discovery strategy based on the recommendation of information sharing mechanism.That is，through a third part node，two nodes which at first have no relationship link together.They have similar demanding and can share each other’s information of resource pool.The simulations show that this strategy is more efficient than Globus MDS.