The invention relates to a distribution method, comprising the steps of 1, receiving a virtual network resource request; 2, distributing virtual network resources; 3, recording the actual resource utilization rate of the virtual network; 4 starting a prediction algorithm; and 5, redistributing the virtual network resources. Compared with the traditional network resource distribution, the distribution method adopts a quadratic exponential smoothing method, according to the history data, the resource requirements of each virtual node and a virtual link of the next time quantum can be more accurately predicted, resources can be dynamically distributed to the virtual network, the utilization rate of the physical resources can be improved, and meanwhile the receiving rate of the virtual network resources can also be improved.