China’s economic development under the new normal will face increasingly serious energy and environmental constraints,but there is little space for energy savings and emission reduction by further optimization of energy structure,and the advancement of strategic adjustment to industrial structure is the most important and most realistic way to improve energy efficiency.This paper analyzes the evolution characteristics of the ad-justment to industrial structure and changes in energy efficiency and their correlation from two perspectives of adjustment width and adjustment quality,and empirically tests the spatial spill-over effect of the adjustment to industrial structure on energy efficiency.It ar-rives at the conclusions as follows:firstly,with the adjustment to industrial structure, Chinese urban energy efficiency shows an M-type trend,and there are significant spatial spillover effects and interactive coupling relationship between industrial restructuring and energy efficiency;secondly,the improvement of the quality of industrial restructuring has significantly promotion and spatial spillover effects on energy efficiency,but the expansion of the magnitude of industrial restructuring has a significantly inhibitory effect on energy efficiency;thirdly,for regions,the improvement of energy efficiency in eastern and west-ern regions should give priority to the improvement of the quality of the adjustment to in-dustrial structure,to avoid production efficiency losses resulting from simply suppressing the second industry and developing the third industry or simple industrial & labor trans-fers,and central regions should make full use of the spatial spill-over effect of the quality of the adjustment to industrial structure on the improvement of energy efficiency to perfect energy efficiency of neighboring areas,while they continues to expand the magnitude of the adjustment to industrial structure through undertaking industrial transfers.%新常态下中国经济发展将会面临越来越严重的能源环境约束问题，通过进一步优化能源结构来实现节能减排的空间已不大，而推进产业结构调整才是提高能源效率最重要、最现实的途径。文章从调整幅度和调整质量两个维度分析了中国产业结构调整与能源效率变化的演变特征和相互关系，并实证检验了产业结构调整对能源效率影响的空间溢出效应。结果表明：(1)伴随着产业结构调整，中国城市能源效率呈“M ”形变化趋势，而且产业结构调整与能源效率存在显著的空间溢出效应和交互耦合关系。(2)提高产业结构调整质量对能源效率存在显著的促进效应及空间溢出效应，而扩大产业结构调整幅度对能源效率具有明显的阻滞效应。(3)东、西部地区能源效率的改善应以提高产业结构调整质量为主，以避免单纯地“退二进三”或“腾龙换鸟”所带来的生产效率损失，而中部地区在继续通过承接产业转移来扩大产业结构调整幅度的同时，要充分利用产业结构调整质量对能源效率改善的空间溢出效应来改善周边地区的能源效率。
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