IRI, as one of the most important worldly happenings at the last years of the twentieth century, has been followed by great and vast changes in Iran`s social and political fields. And so has been in the field of historiography. Historiography is a notable and complicated subject rising from historian`s active and mental interaction with historical events. In each era, it is based upon its contemporary thoughts and discourses on which different eras of historiography appeared. On this basis, one never views the historiography of IRI as a continuance of Pahlavi`s one. What notable in historiography lies in knowledge of the way in which the historical event happens and historian`s thought of it. It is, therefore, necessary for Historians to note the grounds and desirable conditions in historiography of IRI and in studying historical events to prepare the grounds for a complete and documented historiography. In the paper, it has been tried to study the line in which the historiography of IRI occurred and criticize it.