Abstract: This paper proposes a configuration software solution under the Linux operation system for the control of the space environment simulator, including the structure, the basic principle, a QT software frame and the dynamic data exchange scheme between the PLC and the computer. The OPC driver oriented for Linux is also developed for many-to-many communications between the hardware devices and the SCADA software. An algorithm named Scan PRI is then developed for the driver. This algorithm is optimized and is shown to be more efficient as compared with the "scan in sequence" approach in Windows. This configuration software enjoys a good control effect in practical projects.