The aim of this paper is to evaluate the technical efficiency of great industries section (factory industries) in Iranian provinces, during 1370- 1381and to compare them with each other. To achieve this goal, we have Utilized Data Envelopment Analysis method (DEA).The results of the research indicate that the provincial mean square of the great industries technical efficiency in factory industries, in relating period, corresponds to -0.61. Meanwhile, it suggests that there are significant differences between some provinces. The highest efficiency belongs to Tehran province and the lowest is of Sistan and Baluchestan.Generally speaking, on one hand there are Tehran, Golestan, Esfahan, Kerman and Khuzestan, which orderly are among the highest. On the other hand, Sistan and Baluchestan, Kurdiastan, Semnan, Gilan and Iylam are among the lowest ranks.According to the results, it is notable that, despite their fewer Production facilities, Hormozgan and Bushehr, comparing with other great Industrial provinces such as Tehran, Esfahan, and the central one, during the time of the study have had an average higher growth rate in technical efficiency.In general, according to our results, the best advice for policymaking could be empowering the economic managerial of industrial corporations in this section, by increasing their efficiency, and to allocate the best of productive factors to give them good opportunity to achieve the goal of industrial growth and development of our country. This would require a new approach and an all inclusive attempt on the part of different governmental and nongovernmental institutes in this field.