Abstract: This paper introduces the main features and status of the archive management for nuclear facility decommissioning projects,and explores and discusses the countermeasures in its archive management.Taking the practice of the archive management system of a reactor decommissioning project as an example,the paper illustrates the establishment of archive management system for the nuclear facility decommissioning projects.The results show that the development of a systematic archive management principle and system for nuclear decommissioning projects and the construction of project archives for the whole process from the design to the decommissioning by digitalized archive management system are one effective route to improve the complete,accurate and systematic archiving of project documents,to promote the standardization and effectiveness of the archive management and to ensure the traceability of the nuclear facility decommissioning projects.