當大型災難(傷患人數達數十人)發生時，常造成大批傷患競爭有限的醫療資源，許多嚴重的傷患無法即時得到救治而死亡，如何有效的利用現有醫療資源，將各個傷患盡快的送至合適的醫院便成為重要的議題。現今救災救護指揮中心派遣的後送官，憑藉自身經驗，直覺地將各個傷患各分配一家醫院，並將資訊告知救災救護指揮中心，若是中心發現分配的醫院已經滿載，即會立即告知救護車前往另一家有空床位的醫院。本研究預探討在發生大型災難發現大量傷患時，緊急醫療服務系統選擇傷患目標醫院的問題，以增加重症傷患的成功率為目標，將輕、中症傷患送至較遠的醫院，使得後來發現的重症傷患能夠在死線時間前送往合適的醫院，進而增加重症傷患的成功率。

本研究提出的混和資源分配系統為兩階段程序，排序傷患程序和選擇醫院程序，前者決定傷患上救護車的順序，後者決定傷患分配至適合的醫院，在模擬結果，我們會比較現行方法與HRAS，本研究可有效的提升重症傷患的成功率。

When a major disaster about a large number of injuries occurs, a large number of injuries only received limited medical resources. Many serious injuries cannot be timely treatment and many of them die. How to effectively use existing medical resources and give injuries adequately medical advice as soon as possible is an important issue.
Evacuation Officer in Emergency Command Center instinctively make injuries distribution by experience and notify Emergency Command Center of information. If Emergency Command Center learn about full load in hospital, it will order ambulance driver to go to another hospital which has free Emergency beds. In this paper, we approach that Emergency medical service system choose an injury to target hospital when they find a large number of injuries in a major disaster. Direct toward the target of increasing the success rate of severe injury, we try to assign not severe injuries to far hospitals. It will make later found severe injuries be assigned to suitable hospitals before their deadline and then increase the success rate of severe injury. We propose a Hybrid Resource Allocation System which separates hospital allocation to two modes: injury sequence mode and hospital allocation mode. The former decide the order of injuries to ambulance. The latter decide to assign injuries to suitable hospitals. In the simulation results, we compare current hospital allocation method with HRAS.HRAS can effectively increase the success rate of severe injuries.

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