A history of ancient Iran divided to several dynasty including, primitive and Kianian and Ashkanian. In the story of this national epic we couldn’t see any information from the Hakhmaind and median people. The main purpose of this paper is that we try to seek why the history of this dynasties has been removed from this masterpieces. Median have been settled in the western part of Iran and they had been success to make great and powerful government. In the eastern part of Iran the Kianian has been governed. Median people could conquered the eastern part and added this part to their government. After sometimes Median conquered by Hakhaniad and this has been removed by Aleksander. In the realm of Ashkanian gathering of this story has been started and on that time Ashkanian wanted to pay more attention to that stories and they talk about two defeat so that first one was crushing of ordinary people and second one the Hakhamanid but Aleksander and the first one much more smaller than the second one. The writer tried to remove the first defeat and the second was so great that they can remove it from the historical text. By passing time both of this mixed with each other so that Dara could be those one that crushed by Meadian an so that after Kianian, Aleksander come to thrown and the history of Median and Hakhmanid removed from the history. This happens occurred in the period of Ashakanianbecouse in the period of Sasaniad just one deafeat was known and thay had no inform about Hahkamaid.