An immersive multimedia system, an immersive interactive method and a movable interactive unit are provided in the disclosure. The immersive multimedia system includes multiple movable interactive units, an imaging apparatus, and a computer device. The multiple movable interactive units are disposed on at least one of the wall and the ground. The imaging apparatus is adapted to display an image screen on at least one of the wall and the ground. The computer device is connected to the multiple movable interactive units and the imaging apparatus. The computer device is adapted to control the multiple movable interactive units and the imaging apparatus. The multiple movable interactive units each include a touch sensing unit, and the image screen provided by the imaging apparatus changes in response to the touch sensing unit of at least one of the multiple movable interactive units sensing being touched.