The database microservice system based on Docker is developed for the reading and writing speed of Database in big data times and the problem of the need to improve the migration performance. First of all, the paper analyzes the Docker container technology principle, Docker container architecture, as well as the function of the internal module, and compared with traditional virtual machines, in speed, efficiency, management has improved; Secondly, to analyze the requirements of the database microservice system that needs to be developed, in Redis, MongoDB, and MySQL. The interface of the upper computer interface includes the data layer, the management layer, and the functional layer structure. And the development of database microservice system based on demand and architecture. Finally, the development of the database system is performed by the actual computer system. The analysis system′s reading and writing ability, database function, and the test result of humancomputer interaction interface verify the validity and reliability of the system in the application.