This study aims at determining the Characteristics of the Flora of Jabal Abdel Aziz. Floristic surveys had been made in 60 sites in Jabal Abdel Aziz during the years 2001, 2002. About 900 specimens of plants were collected. All these specimens have been identified according to the local floras (Mouterd, P. 1966,1970,1984, Townsend, C.C.& Guest, E. 1985, Zohary, M.1972). A list of the plant species in the Jabal was prepared. This study showed the presence of 407 plant species in the Jabal, of which 242 species are identified for the first time. Most of these plants are Mediterranean or Iranian elements. There is 16 endemic species in the Jabal Abdel Aziz.