The invention relates to a roller shutter assembly for a slide-outward panoramic sunroof of an automobile. The roller shutter assembly comprises an electric roller, roller shutter window sheets, guide rails and a controller, wherein the electric roller is arranged at the inner side of the roof of the automobile, and the guide rails are arranged at the left and right sides of the roof of the automobile and consistent with the shape of the roof; one end of each roller shutter window sheet is wound around the electric roller, and two sides of each roller shutter window sheet are arranged on the guide rails; the controller is electrically connected with the electric roller. The roller shutter assembly is an integrated roller shutter, and has the advantages of being easy to operate and large in shade area; through the disposition of buffer bars and buffer blocks, damages of the guide rails and roller shutters when the automobile drives can be reduced, and through coating of wear-resistant lubricating materials inside the guide rails, the service life of the roller shutters is further prolonged.