In order to provide fast and efficient relief activities in wartime, established the accessorial decision system of emergency rescue in the wartime hazardous chemicals accident. Accessorial decision system of emergency rescue in wartime hazardous chemicals accident process application analyzed, and system structure, function design and established emergency programmer diagram, analyzed endanger area, and then used the visual interface to imitate influence scope. To support timely decision-makers understand the dynamic development of the event, and formulated the command decision.