Method for remapping virtual network resources

The invention discloses a method for remapping virtual network resources, and relates to the technical field of virtual networks. The method comprises the following steps of: acquiring a key virtual node periodically, wherein the key virtual node is a virtual node in a virtual node set which is born by a physical node having a resource utilization rate greater than a threshold value; mapping resources of the key virtual node to a physical node having the resource utilization rate smaller than the threshold value, so that a resource load of a physical network is balanced; and remapping resources of a virtual link which is connected with the key virtual node. According to the method, a whole physical resource load is analyzed periodically, whether virtual resource is required to be remapped is judged, and part of key virtual nodes which cause unbalance of the physical resource load are selected to be remapped during remapping, so that the conventional physical resources can be integrated, the physical resource load can be balanced, the receiving rate of virtual network requests is improved, time consumption and computation cost can be saved, and the influence caused by the interruption of virtual network normal service can be maximally reduced.