The present article seeks after presenting “theory of political justice” in political thinking of Khwajeh Nasiruddin Tusi and it will be discussed in discourse analysis methodology. Khwajeh Nasir procee ded to reorganize the issue based on principles of Shi’a –particularly “justice” and “Imamate” and has legitimized Imam or arch-chief of Medina based on Divine Justice in Divine Legislation system and rule of Grace and has seen him as executive of social and political justice. Thus, “Imam” is centerline of political thinking and centrally joined proof of Khwajeh Nasir’s discourse of political justice, who, by fixation of meaning, looks for hegemonic himself by absorbing floating proofs (link to active intelligence, intellect-religion link, politics-religion link, virtues of Imam, aptitude, entitlement and…) from discourse-like field of the day. Through Shiite approach, Tusi presents utopia and creates sustained and enduring discourse in the face of other  discourses (in his time and onwards).