Outdoor swing pendulum is a kind of large-scale amusement facilities. The movement principle is caused by the pendulum, the trajectory is also the pendulum form, and below the arm is a disc. When the arm does the pendulum swing, the disc does the turnover movement. Sitting on the pendulum, the tourists have a strong centrifugal feeling. During the equipment's operation, the visitors can experience 1-2 seconds of weightlessness, like astronauts in Space.