The "Tenth Five-Year Plan" earthquake precursor data management system,as the core business software of the China Earthquake Geophysical Observation Network,has been in operation for more than ten years. With the increase in the amount of observation data,the performance quality of the database has gradually decreased. In addition,since there exist many security issues in the management system,the system architecture is outdated,which makes it difficult to meet the needs of business development. Based on the big data architecture,the China Earthquake Networks Center uses technologies such as message middleware and time-series database to reconstruct the management system. In this system tables are built in the database,and historical data and incremental data are migrated to the new time-series database,which significantly improves system performance,data security and availability. The introduction of technologies such as distributed and containerization has enhanced the high availability of the system,and can further increase the processing capacity of the system through horizontal expansion.