The present invention relates to a method for preventing risk diffusion in an industrial complex, capable of performing precise and manifestable analysis, which comprises: a site situation information extraction process; a wind field analysis process of analyzing diffusion of a wind field by a reverse range weighting method; a monitor display process of expressing content analyzed in the wind field analysis process as the wind field and a wind rose map; and a risk are display process of performing a diffusion analysis for a corresponding chemical substance.
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