Background: An desirable supply chain can not be one-sided and not considering its various forms causes negative consequences and sometimes deviates from organizational purposes and considered goals in production; The output of this issue led to the formation of the general principle called larg supply chain management. Objective: Accordingly, the present study was examined with the aim of identifying and prioritizing the factors affecting the establishment of long-term relationships with larg supply chain suppliers (lean, agile, resilient and green) with a fuzzy approach in medical equipment companies. Research Method: This study was applied in term of purpose and descriptive-survey studies in terms of research method in which, using theoretical and empirical foundations, each of the criteria has been determined in different dimensions of the larg supply chain. At first, using the fuzzy Delphi method, the main criteria and in accordance with the larg supply chain were determined. In the second step, these criteria were examined in supply chain companies using a one-sample t-test. In the next step, the determined criteria were prioritized using the opinions of 7 experts and the fuzzy hierarchical technique. تفاصيل المقالة