Abstract Egypt lived after submission of the Islamic Authority dominance and control of many nation or local authorities and split from central government and declared its independency. It could be one of reason which helped those authorities to success. The privilege of Egypt is in the desert nature that had which prevent to be controlled by any country and especially it was the center of civilization since the dawn of the history. On the other side, the Fatimid Caliphate (297- 567 AH / 909 -1171 AD) looking for an environment that helps emergence and companion for the central government or Abbasid caliphate (297- 567 AH/909 -1171 AD), and it seems that Fatimid Caliphate was successful in establishing their Caliphate civilization in Egypt after the transition to it in (969AH / 358AD). Adding to Egypt a civilized historical station which witnessed Construction activities and establishing the dynasty upon administrational institutions. They were built according to the administrational and financial systems that shaped their dynasty policy for distribute their power on the largest spots in Islamic countries. This research is divided into sections; there is a brief introduction about the emergence of Fatimid Caliphate and transition to Egypt as an essential part of the research. First section is dealing with the factors that affected the Fatimid Caliphate administration and declaring the reasons that led them to establish administrational institutions and spend their effort for strengthen their dynasty. The second section deals with the most important administrational system in Fatimid Caliphate for elaborating those systems and their privileges. Third section demonstrate the results which the researcher obtained. Keyword: Systems, administrative, era, Fatimid.