The utility model relates to a giant magnetostrictive system in structure active control. The giant magnetostrictive system comprises a giant magnetostrictive driving system and a controlled structure which is driven to act by the giant magnetostrictive system. The driving system comprises a controller and a driver. The giant magnetostrictive system also comprises a force sensor and a displacement sensor. The force sensor detects output force of the driver and converts the output force into a force sensing signal. The displacement sensor detects displacement of the controlled structure and converts the displacement into a displacement sensing signal. The output of the force sensor is in feedback connection with the driver. The output of the displacement sensor is fed back to the controller and in feedback connection with the driver. The giant magnetostrictive system further comprises a compensator which is used for compensating deviation occurring when a control signal output by the controller is loaded. The input of the compensator is connected with the controller. The output of the compensator is connected with the driver. According to the utility model, multiple links of complex interaction and integrated engagement are achieved, precision of the whole giant magnetostrictive driving and controlling systems can be further improved, and control effects are further enhanced.