Abstract:The cadre evaluation plays an important role in guiding, motivating and motivating leading cadres. There are some limitations in routine cadre evaluation, such as incomplete data sources, incomplete comprehensive research and evaluation, lack of continuity, dynamism and comprehensiveness.The emergence and development of big data technology brings a new vision and method for cadre evaluation. Based on the view of cadre evaluation big data, this paper discusses the application of big data in power supply enterprises. Through massive data collection, mining, analysis and application, it constructs a quantitative and hierarchical classification model of large data. Through this model, effective daily assessments will be carried out, classification assessment will be strengthened, and big data will be used for comprehensive research and judgment to improve the comprehensiveness, objectivity, timeliness and precision of cadre evaluation work, and promote the scientific and lean evaluation of cadres. The application of big data in the cadre evaluation needs to solve the shortcomings of top-level design, improve the awareness of big data for all staff, overcome the difficulties in the hardware and software of information systems, and make the evaluation method of big data a useful supplement to the regular evaluation, and help the innovation and reform of power supply enterprises.