Active control of the smart structure of shape memory alloy (SMA) is presented. In order to overcome the thermal hysteresis and enhance the dynamic response of the SMA material, a vibration control strategy of alternatively drivin g the SMA groups is proposed and achieved based on a self-developed wide-range constant current source, where PIC18F4620 and high-voltage power amplifier OPA549 are used. The system architecture of the constant current source and the design of hardware/software partition, as well as the modeling methods of the SMA smart structure are introduced. Besides, a simulation of SMA vibration control under the proposed strategy is illustrated. Experiment results show that the developed constant current source stabilizes the current effectively, and the SMA driven strategy for vibration control is proved practicable. It is hoped the proposed strategy and the system are informative for other multichannel vibration control application with large currents demands.