Iraq and Egypt are among the oldest citizens in which human civilization arose, as relations between civilizations took place since ancient times, and the messages discovered in Tel el-Amarna are the best evidence of this, and their influence extended to ancient civilizations and other regions, especially Iran in the era of the Achaemenid and subsequent era in the East and civilization Greek and the branching civilizations of the West. The research deals with the mutual architectural influence between Iraq and Egypt in the Islamic era, as that influence was increased by the political and cultural unity between the countries of the Arab world for a long time before the emergence of Islam, which resulted in the expressive unity of architecture and the arts.