The importance of improving energy efficiency in the industry and its sub-sections is that reduce the cost of production at the macro level, Pay less subsidies and reduce the cost of industrial products. In this way, enhanced the value added of these sectors and increase competitiveness, enhance product quality, and ultimately, reduce imports some of important goods and increase exports of some products that made. This study examines the effect of eliminating energy subsidies on the energy intensity in iran industry using the approach of seasonal time series data in during 1385-1392 with Cobb-Douglas cost function that negative correlation between energy intensity and energy prices approved. Also results show that over time with advances in technology, energy intensity is decreased. Then energy price liberalization scenario, assuming a steady rise in nominal prices for the period 1393-1389 is studied. The results show that after the liberation of energy prices, energy intensity is decreased so that the highest reduction in the first year of liberalization and in the years following the reduction of energy intensity has decreased.