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To large-scale emergency material dispatch across regions,the material dispatches in emergency supplies regions]are trie! Key ensuring follow-up materials! of emergency.In Oris paper,hub-and-spokej network is! applied to the dispatch]of emergency supplies in the regions,and,for continuous! consumption problem,a bi-level optimization mathematical model based on both the earliest start time for material outside-transport and the lowest cost is established. Then the algorithm for the model is given.An example for the model is solved finally.