This study discusses the effect of Ottoman regulations on administrative status in Al Hegaz State during the period 1255-1293AH/ 1839-1876 AD. The researcher adopted a historical, descriptive and analytical approach to achieve the aims of his study through searching, refining and analyzing historical facts by relying on Ottoman documents and modern Arabic, Ottoman and foreign studies and sources. The study included an introduction, five chapters and a conclusion. The first chapter discussed the weakness, dissolution and the attempts to reformation in the Ottoman Empire between 1566 and 1789 AD, while the second chapter discussed the Ottomans' reformation efforts and the era of Ottoman regulations in the period 1789-1876 AD/1255-1293AH. The third chapter dealt with Al Hegaz State administrative body and divisions, and the fourth chapter explored the administrative councils and civil administration in the State. The fifth and last chapter discussed the military and security and law enforcement forces administration. The study indicated a number of results, the most prominent one is that it revealed the regulation decrees and their affiliated laws administrative effect in Al Hegaz State, and that included civil and military administration aspects, which are health administration, finance administration, endowments administration, education administration, judicial administration, military administration, and security and law enforcement forces administration.