The appearance of the position of (the command of princes) in the Abbasid era was a result of the deteriorating situation of the Caliphate which was weakened because of the Turks holding on the reins of the state during the period (295_320A H/907_932A D ) in addition to the worsening economic situation in the country the interference of the army in the policy of and the affairs of the caliphate the fig_ thing to take hold of the position of the caliph and the caliph Al Radhi Bilah and his ministers weakness moreover the Courtiers cupidity to take hold of positions At that time the women , the servants , the leaders and the ministers who mostly were Turks were allowed to interfere in the affairs of the state The research contains an introduction and talking about the beginning growing and the appearance of theposition of (the prince of princes) as well as the seven factors that led to the appearance of such a position At last I talked about the six men who took over this position The first prince of princes was Muhammad Bin Raeq while the last one was Abu Jafar Muhammad bin Yahia bin Shiraz