Abstract: To enhance the reliability of emergency resource dispatch for oil and gas long-distance pipeline accidents, it should be ensured to have the shortest starting time for rescue activity and the minimum emergency rescue stations. The optimizing combination problem of emergency resource dispatching is researched in this article, under transport-power constraint condition of rescue stations and continuous consumption condition of emergency resource. Considering the transport-power as a new constraint condition, the continuous consumption emergency resource dispatching model was established and the corresponding recursive algorithm for that model was gained. Further, the rationality of the model and the validity of the algorithm were proved by numerical simulation of an example. The results show that, compared with the plan without consideration of transport-power constraint condition, the emergency resource dispatching plan under transport-power constraint condition contains more emergency rescue stations, but it is more consistent with the real practice. The solution of this work could be used to work out emergency resource dispatching scheme accurately and reliably.