This paper studies the application of energy allocation in actual use by clustering analysis, grey correlation analysis, multivariate stepwise regression and the portfolio selection model, using MATLAB, SPSS and EXCEL software to solute the problems. From these researches, the best way of energu allocation of the urban industrial enterprise development level is found. It is showed that light industry and other, machinery and equipment manufacturing, metal manufacturing, power gas and water production, mining and manufacturing, chemical gray correlation degrees were 0.6409, 0.5179, 0.4670, 0.4858, 0.5451, and 0.7778. When the total energy consumption is reduced, it is necessary to increase the low energy consumption industries such as light industry and reduce the high energy consumption industries such as metal manufacturing. When the total energy consumption is reduced and the current value of output is increased, it is necessary to increase the energy of light industry and other chemical industries and reduce the energy of other industries.