Hazardous chemical leakage accidents seriously threaten social and environmental safety. The primary task is to fi nd the source of the leakage quickly and take measures to deal with it after the accident happens. The scenario library of hazardous chemical leakage accident was constructed based on general wind fi eld. The inversion effects of the scenario library for hazardous chemical leakage accident were verifi ed through the Coyote experiments. On these grounds,the emergency decision system for hazardou...