This article focuses on a detailed introduction of the construction requirements and overall architecture of the Meteorological Big Data Cloud Platform (“Tianqing”) archive storage system, and an indepth analysis of several key technical issues of the platform implementation. “Tianqing” archive storage system is based on online storage, offline storage and tape drive management software. Through the hierarchical structure system, it establishes a dynamic and scalable archive cluster. The system implements multiprotocol data archiving and sensitive data archiving to meet various data archive scenarios. The system has data restoration, entire data process traceability, standardized tape management and other functions. In August 2020, the “Tianqing” archive storage system began to run operationally.