Aiming at tradition wind tunnel captive trajectory simulation (CTS) motion control system can't meet certain new wind tunnel needs process testing, this paper introduces a CTS motion control system based on the extremely fast control (XFC) technology from two side of hardware and software. CTS position control and continuous speed control capabilities are obtained by applying the PC-Based motion control method, a kind of embedded PC, servo controllers with real-time EtherCAT Ethernet and fast I/O module into the CTS control system and developing a set of motion control procedure using the TwinCAT automation software. The wind tunnel calibration results show that this system is characterized by simple software and hardware structure, good dynamic response performance and small balance interference signal.