| The human society is making great strides forward to the becoming an information based society, space information technology which is an important part of information technology, its development and the application are the most important technical breakthrough which most has the impulse in the 20th entury. In the past several dozens years, take the remote sensing, the geographic information system and the satellite positioning system technology has played the vital role as representative's geography space information technology application in national economic construction many domains.But in the safety control of most dangerous chemicals enterprise, more attention is given to the conventional safety control, and the spatial information research has been neglected frequently to. This article has studied the dangerous chemical fire analogous system, it has analyzed the dangerous material modern management pattern, and has developed auxiliary policy-making software which is based on the GIS platform through the geographic information system, the software process, the algorithm design and the analysis, computer graphics theory and method. GIS can promptly accurately determine the geographical position of chemistry dangerous source through the science and reasonable safety control. And also GIS can help to estimate the involved scope after the accident. It can provide vivid and directly related foundation data for each place all levels of leaders and the safety control department. Then it can help grasp the local dangerous chemical information promptly, accurately and comprehensively and provide systematic technical support promptly accurately for the leaders' decision-making to achieve the aim of keeping the people and the property safety.
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