Abstract
Imam Ali(PBUH) whose name is associated with justice, has been prominent not only in Islamic and Shiite worlds, but also in history of mankind as a thinker and politician who is the gold standard of justice. Therefore, Ali(PBUH) is not only Leader of eloquence and oratory in field of theoretical politics, but also as Imam of equality and justice in the field of practical politics, his character during his administration as a balance of justice can be used as a practical model of justice in different dimensions by political systems. Therefore, the purpose of present research was to outline justice in the practical course of his governance, and question of the present research was, what was position of justice during reign of Ali(PBUH)? The hypothesis of research in response to mentioned question is that justice plays a central role in the practical course of Imam's rule, just as the prominent aspect of Imam's theoretical course is justice. By examining above-mentioned hypothesis, findings of present research, using the library-documentary-descriptive-historical-analytical method, was that justice was the foundation of Alawite government during rule of his government, and he declared the philosophy of accepting leadership and government as the implementation of justice, and during his rule, he did not hesitate to make any effort to achieve justice in various political, social, economic and cultural fields. Therefore, it can be said that during his reign, Ali(PBUH) presented scale of justice as a real and practical touchstone of the scale of justice to measure level of justice of governments of all ages and eras.