Abstract: Adaptive technology is considered as one effective approach to enhance the endurance ability of sensor-craft, and the drivers are the basic system to keep adaptive structures working. In this paper, a kind of pressurized telescopic tube actuator which is capable of both driving and bearing is proposed. The mechanical model of the telescopic tube is established and then its simplified formula of equivalent stiffness is derived. Finally the telescopic tube actuator is applied to an adaptive wing and the vibration deformation of wing under airflow disturbance is simulated. Results show that the pressurized telescopic tube actuator is capable of producing enough driving force and displacement, also providing effective structure stiffness for adaptive structures.