The invention discloses a method and a device for distributing network resources, which belong to the technical field of communication, wherein the method comprises obtaining current solution distributed by resources according to the primary topological structure of network, obtaining the neighborhood space of current solution, selecting the optimum solution which is not forbidden from the neighborhood space, judging whether the optimum solution which is not forbidden is better than the current solution or not, if the optimum solution which is not forbidden is better than the current solution, using the optimum solution which is not forbidden as a novel current solution, then, judging whether the current solution satisfies the preset loop stop condition or not, if the current solution satisfies the preset loop stop condition, distributing network resources according to the novel current solution, or refreshing a tabu list, and continuously obtaining the next solution. The device comprises an optimum solution obtaining module which is not forbidden, a judging and processing module and a resource distributing and executing module. The invention selects the optimum solution to distribute the whole multi-layer network resources through multi-time iteration, and saves the occupation of user services to network resources.