The invention relates to a life cycle estimation method of electric power big data equipment based on historical operation information. Through the statistical analysis of the historical operation information of electric power equipment, the life cycle information of different equipment, including equipment ID, normal range of life cycle, used life cycle, predicted residual life cycle and early warning status is obtained, provide decision support for equipment operation and maintenance, and is applied to the power big data application function of supporting multi-level control system to further improve the technical level and application level of smart grid.