Abstract: Coordinating and commanding the dispatch of major and sudden disaster accidents is one of the important responsibilities of the command centers at all levels of the fire rescue team. After the reform and restructuring, the functions and tasks of the fire rescue team have been further expanded. With the increasingly severe and complex situation of firefighting and rescue, insufficient information support has become a prominent factor limiting the effectiveness of auxiliary command and dispatch. In order to effectively solve the problems of information delay and distortion in the auxiliary command process, it is proposed to build a fire rescue auxiliary command information support system. Firstly, the concept and construction basis of the fire rescue auxiliary command information support system were discussed, and it was divided into three stages: decision-making, construction, and operation. The six essential elements (institutions, systems, mechanisms, standards, talents, and systems) for constructing the fire rescue auxiliary command information support system were deconstructed. The model of the fire rescue auxiliary command information support system was built with "two flows" (information flow and decision flow), "three sets" (resource set, operation set, service set), and "three guarantees" (organizational guarantee, technical guarantee, and safety guarantee) as the core. The application scenarios and operation processes of the auxiliary command information support system were introduced through practical cases.

Key words: fire rescue, auxiliary command, information support