With a throughout study on Shanxi electricity customers’ electro-data and technologies relevant to big data, this passage innovatively puts forward to proceed energy efficiency monitoring analysis and evaluation through big data analysis, with the core of electro-data and integrating the information of industrial characteristics and electrovalence policy, so as to provide a service mode of energy efficiency analysis to customers.Improving energy consumption assessment ability and energy-saving analysis decision-making ability is of practical significance for reducing customers’ energy consumption, and of reference significance for reasonably controlling Shanxi’s total energy consumption and establishing a resource-conserving society.