首先分析格式迁移的原因与基础,然后在OAIS参考模型和保存元数据的理论基础上,结合现今的数字长期保存机构的系统实践,分别从实施时机和实施机构两个角度对格式迁移的实施方式进行对比分析,并结合国外长期保存系统和工具,对格式迁移的关键技术进行探讨,最后就个人和数字保存机构格式迁移的实施提出建议。 First of all, it analyzes the reason and basis of format migration. Based on the OAIS reference model and the theory of saving metadata, combined with the practice of today’s digital long-term preservation institution, this paper analyzes the implementation mode of format migration from two aspects: implementation timing and implementation mechanism And make a comparison with the long-term preservation system and tools in foreign countries to discuss the key technologies of format migration. Finally, some suggestions on how to implement the format migration of personal and digital preservation institutions are put forward.