Based on the characteristics of small mobile ground station of satellite, a kind of servo control software is designed. This software can control servo tracking system basing on satellite orbit parameters and realize the real-time tracking of satellite. Taking task manage module as the kernel module, servo data are sent, collected and stored by high level priority thread; and the servo tracking rendering is displayed by tchart component. Servo test function is provided by the software as well. The experimental results demonstrate that the software design can meet the expected requirements and its modulization degree is high. This system can be popularized to other systems.