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Prognostic Health Management (PHM)uses the equipment data which generated by the equipment to realize the health status of complex equipment monitoring, fault diagnosis, prediction and intelligent decision-making technology through data processing and other means. A large amount of data will be generated during the entire phase of PHM. At present, some domestic and foreign institutions have conducted research and construction on the PHM data system. However, most of the data is only for the management and maintenance of PHM data, but it is not clearly and thoroughly sorts out the logical relationship between the design data, usage data, and verification data of active equipment. As a result building a complete PHM data system architecture has become an extremely important task. This article takes the equipment PHM technology as the background, runs through the entire life cycle timeline of equipment production and manufactures, based on the construction and integration of the equipment-level, regional-level, and platform-level data of the PHM system as the main line, complements the PHM data management and maintenance data, and forms a set of Equipped with a characteristic PHM data system architecture to improve the logical relationship between different data elements of PHM.