The invention discloses a turbulent flow system for reducing ship rolling movement, and belongs to technical field of ship resistance reducing and stabilization. The device comprises a spoiler, a servo motor, a driving machanism and a controlling system. The servo motor is connected with an eccentric wheel through a transmission shaft, the eccentric wheel rotates and is pushed through a roller, the eccentric wheel and the spoiler make reciprocating motion under action of a reset spring. The controlling system comprises a movement measuring sensor, a controlling platform and a data collecting system, angular displacement data measured by a gyroscope are processed by the controlling platform according to the relational expression of the set extending length of the spoiler and angular displacement of a hull, the real-time extending length of the spoiler is obtained; and then the servo motor is controlled to move the spoiler through the driving mechanism until the set extending length of angular displacement of the hull is met. According to the turbulent flow system for reducing ship rolling movement, resistance reducing and rolling reducing can be achieved simultaneously, mounting issimple and convenient, safety and rapidity during sailing of a ship can be improved obviously, and the turbulent flow system has good commercial and military applications.