The Fundamental Methodology of Policy Formulation in the Middle Ages

True understanding of scientific trends without knowing the grounds of their existence is problematic, and sometimes leads to certain misconceptions about them. This paper seeks to investigate the fundamental methodology of policy formulation process in the Middle Ages in order to prepare the ground for getting acquainted with and criticizing this discipline through specifying its epistemological and non epistemological grounds. Using a descriptive-explanatory method, this research answers a number of questions, such as: what epistemological principles dose policy formulation use? What concepts constitute the epistemological structure of this discipline? What is the practical method of this discipline? What are the epistemological areas which policy formulation activates? What individual and social existential non-epistemological grounds does this discipline use? And finally, what criticisms are directed to this discipline of the Middle Age? The policy formulation in the Middle Ages is neither related to the Iranian thought nor part of the wide area of, fiqh and practical philosophy, but it is an independent scientific trend which falls in the province of the social knowledge of Muslims.