The grid in now an infrastructure containing a broad range of resources and services. With the number growing of services, the users cannot easily handle them with the traditional methods. Thus, they need a mechanism which can assist them for the management of the services in the Grid. The traditional methods, based on classification and the keyword search or by categories present much insufficiencies. This article proposes a formal approach based on the Galois lattices for the management of the services in the Grids.