The invention relates to an intelligent fluid viscous damper based on a laminated piezoelectric actuator. The intelligent fluid viscous damper comprises a cylinder barrel with a main cylinder and a secondary cylinder, a piston, a main guide rod and a secondary guide rod, wherein the piston, the main guide rod and the secondary guide rod are located in the cylinder barrel; the tail end of the main guide rod is fixedly connected with the first end surface, corresponding to the main cylinder, of the piston; the head end of the secondary guide rod is fixedly connected with the second end surface, corresponding to the secondary cylinder, of the piston; the cylinder barrel is filled with viscous fluid damping materials; and the piston is provided with a damping hole penetrating through the first end surface and the second end surface. The intelligent fluid viscous damper further comprises the laminated piezoelectric actuator installed on the secondary guide rod, a valve installed on the damping hole and a transmission shaft connected with the laminated piezoelectric actuator and the valve, and the transmission shaft drives the valve to move under the driving of the laminated piezoelectric actuator, so that the aperture of the damping hole is adjustable. The intelligent fluid viscous damper based on the laminated piezoelectric actuator can reduce the time-lag influence and improve output capacity, thereby meeting the requirement for seismic control of civil engineering under the action of earthquakes.