In this paper, Ottoman-Iran relations (1774-1779) are discussed and some evaluations are performed through the data obtained from literature. 1774-1779 Ottoman-Iran war, the causes of the war, Kerim Han’s (1759- 1779) despoil in Iraq and his occupation of Basra are examined here, In response to these actions, Ottoman’s counter attack and the wars between Ottoman-Iran presented respectably and by describing the circumstances, it is tried to draw a conclusion.