This Paper attempts to Jude the axiology of Aristotle’s Philosophy based on Aristotelian Philosophy. For this Purpose, we will first Prove axiology as a kind of knowledge and then we will study the relation between axiology and two others knowledge domains, that is, ontology and epistemology. We will demonstrate that values like goodness and beauty, are same final cause and formal cause for explanation of values of every thing. At least, in the nature, goodness and beauty are the idea of (...) reality which is Present in every things. Although values Such as beauty and splendor, good and bad exist in relation with us. Indeed, Such values don’t have objective being nor ideal existence. Form epistemology Point of view, the values are known with their formal Cause ,that is, with their general form. In Aristotle’s axiology the concept of the end(Telos) is a fundamental concept which shows that the Aristotle’s Philosophy system is a coherent system. thus Aristotle maintains to ontological and epistemological aspects of the values. Also He has even considered hierarchy of value for creatures, knowledge and values itself. Thus , every thing lied in the hierarchy of valuation which has roots in the concept of the end. It also shows that Aristotle either in the position of philosopher or the position of valuation cannot be free from the valuation of ontology and epistemology. Whit such approach, the second section of the paper attempts to show that the end in Aristotle’s Ethic is Idea of perfect that the human attempts to reach happiness in accordance whit the most complete and the most excellent of the virtue and every one should take care of domination of reason over human behavior and whit continuous practice and one can accomplish the virtues whit no extreme this way, all ethic virtues will be obtained by trusting to one’s capability. (shrink)