Abstract: This paper proposes a data management platform based on real-time database, to deal with the data interaction between different subsystems. The real-time database technique is introduced in KM7 horizontal space environment simulator, which is the biggest of its kind in China. The KM7 data management platform collects data generated by different subsystems through the network. It provides functions such as data storage, data archive, data compression and data publishing. After login, the user can get the information of the equipment running state and the test process state.