The current essay talks about one of the most important problems in extent of knowledge and theology. Because in this research one part of the equation is based on oracle and Quran and the other part on human's reason .there fore it talks about reciprocation between these two, certainly not in a down-right way but is for finding the position and role of human's reason in interpreting Quran to Quran. To do this, first it introduces interpretation a way for reaching the meanings and intentions of Quran, and then it cognizes 3 types of meanings and proves their presence in Quran. Those 3 types consists: extensional meaning, connotational meaning,
conceptional meaning. In next step it explicates the mechanism of usage & presence of human's reason in each of these types of meanings.