Abstarct: In this study, according to increasing importance of GSCM, evaluation and sorting of key factors has been investigated in GSCM with use of combinatorial approach baxsed on dematel and fuzzy analytic network process. According to hygienic producer industry position and role playing potential of GSCM in this field, chemical industry evaluated as case study in this article. For this purpose, according to literature review, first key factors has been identified and then confirmed by expert of case study. Identifying of nature of factors and relationship between them has been doing with dematel method. After the decision making structure identification, sorting of MCDM executed with fuzzy ANP method baxsed on opinion of experts. The result cleared the key role of quality, technology, delivery, green image, green product, environmental protection and hazardous material management factors in order of priority. Finally findings of article has been confirmed by experts that it shows us the model performance.