Abstract: Aiming at the risk of decision-making errors in the process of collecting information on hazardous chemical fire accidents, based on the information- driven theory, this paper believes that the fire accident of hazardous chemicals is led by the process of on-site information improvement and update, and the process of dynamic changes in the on- site disaster situation is established to build a spiral cycle formed by accident site information, on- site disaster situation, and emergency rescue operations. The structural model analyzes the four- stage driving process of the information in the evolution of hazardous chemical fire accident scenarios: the initial judgment of the accident outbreak, the intervention of the initial treatment plan, the first feedback of the treatment effect, and the adjustment of emergency rescue operations. Finally, an explosion accident of a petroleum gas storage tank is used as an example to verify the model. 

Key words: fire rescue, fire, hazardous chemicals, informationdriven, scenario construction