Along with the modern society development's reliance on energy consumption increasing gradually,the study and assurance of country energy consumption law and their changing trend already becomes the fundamental premise that society sources of energy savings.According to the structure evolution-energy consumption and structure evolution-unit energy consumption two models,the paper compares USA,United Kingdom,France,Germany,Japan and India,which shows that in modernized construction initial stage,the secondary industry has increased creation to the energy consumer demand obviously.The "reduce the speed" effect has just begun to appear because of diversify of the industries.As a result,the inverted "U" type curve has been also taken form by this effect,which describes the unit energy consumption of every GDP.As the second largest energy consumer in the world,China shows the same law.But it's regretful that the structure energy-saving in China is not satisfying and unit GDP energy consumption sticks at a high level.Therefore,this paper has suggested that structure energy-saving,country wealth pattern adjustment and energy statistic should be paid more attention to.