At the time of disaster, medical resources are limited. To save the injured person as many as possible, triage is important. Recently, the concept of triage in emergency medical care at the time of disaster has attracted widely in Japan. In order to perform emergency lifesaving activities at an real disaster spot quickly and accurately, it is essential to do triage training frequently. Many systems have been developed to support medical activities at real spot and triage training. However, current systems are designed either for training only or for usage in real situations only. In this study, we propose an architecture and implementation of a triage support system. We designed the system so that the users can select different modes, and implemented a prototype system. The evaluation shows that our system can be used in different situations and the operation of the system can be done without any problems.