The invention discloses a hinge plate vibration control device based on multiple laser displacement sensors and a method. The device comprises a flexible hinge plate. The flexible hinge plate is formed by connecting two flexible plates through a hinge. One end of the flexible hinge plate is fixed through a mechanical clamping device. Three laser displacement sensors are used for measuring and are arranged on one side of the flexible hinge plate. Pieces of piezoelectric ceramic are used as drives. Optimization allocation is carried out on the pasting position of the laser displacement sensors and the piezoelectric drives. The bending mode and the twisting mode of the flexible hinge plate are decoupled in detection and drive control. According to the method, the vibration information of decoupled bending and twisting modes is acquired according to measurement signals of the laser displacement sensors; a vibration active control algorithm is operated to acquire controlled quantity; and piezoelectric drive voltage amplifiers are used to respectively drive bending and twisting mode drives to control bending and twisting multimodal vibration.