Industry is considered the main support of economical development in all around the world ، while Extractive industry in particular considered the main supporter of economical development in countries of Arabian peninsula since all elements of its are available. This study depend on uses some of statistics indexes to demonstrate the importance of industry in comparison with the other economical activity in the country of territory such as the rate size of industry، rate of density of industry and rate of industrial importance. This study shows that there are differences between industrial size and its density in Saudi Arabia. However، the existence of oil lead to take the first rank in industrial importance، United Arab of Emirates was taken the second rank، but Yemen and Oman were taken the last rank. For that reason the other countries of the territory should care of the industrial side and take the benefit from industrial countries experiences.