According to the fact of material supply of Xiaowan hydroelectric Project,presents the three-hierarchy notional model of material dispatching and develops the material dispatching management information system.

On the basis of analyzing the disadvantages and requirements of material supply of Xiaowan hydroelectric project,the foremost project of Lantsang valley hydroelectric development,develops a material dispatching management information and decision support system based on both C/S model and B/S model.

According to the material supply of Xiaowan Hydroelectric Project,The author presents the three-hierarchy notional model and discusses the mathematical model and algorithm for material stocking and dispatching,which is used in the decision support system for material dispatching.

Therefore, emergency material distribution becomes the key question in the entire rescue process, the success or failure of the emergency relief work related to transporting the emergency relief materials to the demand points in the shortest time.

<Abstrcat> After analyzing the supply organization management architecture and the transaction flow of material dispatching for Longtan hydropower project, the information work flow of such distributed material dispatching information system is proposed, which has referenced significance for similar large scale material dispatching system.