The invention relates to a life cycle management system of electric power big data equipment, comprising a data pre-processing module, a data distribution checking module, a life cycle model establishing module and a result output module. The data pre-processing module is used for counting equipment operation information and eliminating abnormal information. The data distribution verification module performs distribution verification on the total life time of each type of equipment processed by the data preprocessing module. The life cycle model establishing module is used for establishing a life cycle model of various types of equipment, and calculating life cycle information of designated equipment based on the model; The result output module is used for outputting the life cycle information of the device.