one of the most important factors in study of project’s , is the study of environmental opportunities factors the permanent study of environmental opportunity factors . the study of permanent environmental changing and knowing golden threats’ cooperate with possible threats and at the result in structure forming and future skeleton of organization has a vital effects . the petrochemical industries is the industry with high extra value and iran with a greats gas and oil resources can change in to this industry pole that knowing environment and the situation of this industry can help extraordinary to this matter. in this research , with analyzing and studying total model’s , that contains total “pest,pestel,pesteli, pestlied,steep, steepled, steeple & etc” and small model like the five power and diamond ,the three layer of localized model for iran petrochemical that contains the effective major criterions on industry and state on the share of each qualification , in which ,it can be help to the owners of decision in petrochemical industry for finding opportunities , threats and obtained changing environment .