In recent years,the total amount of energy production and energy industry investment in fixed assets are increasing rapidly in China.The paper analyzed the interaction between energy production and energy industry investment in fixed assets by using the statistical methods and efficiency measure based on the inter-provincial panel data during 2000—2009 years in China.The results show that there is a stage difference in utilization efficiency of energy industry investment in fixed assets in our country.The fixed assets investment efficiency of northern provinces is higher than others;however,energy production efficiency in China is generally low.Due to the differences of energy production efficiency between different provinces,energy enterprises will get greater benefit if they expand the scale of investment in fixed assets.Therefore,the relation between energy production and energy industry investment in fixed assets should be improved by technical progress,technology diffusion,industrial consolidation and macroscopic readjustment and control.